From these four cases we see that subtracting a positive number is equivalent to adding an equal negative number ; and that subtracting a negative number is equivalent to adding an equal positive number. New School Algebra - Page 36by George Albert Wentworth - 1898 - 407 pagesFull view - About this book
| Massachusetts. Board of Education - Education - 1910 - 444 pages
...subtracting one quantity from another. One text-book gives this rule for this process : — It is evident **that subtracting a positive number is equivalent to...is equivalent to adding an equal positive number.** To subtract, therefore, one algebraic number from another, change the sign of the subtrahend and then... | |
| George Albert Wentworth - Algebra - 1886 - 284 pages
...(-3). (2) + 4-(-3) = + 4 + (+3). (3) -4 — (+3) = — 4 + (-3). 52. From (1) and (3), it is evident **that subtracting a positive number is equivalent to adding an equal negative number.** From (2) and (4), it is evident that subtracting a negative number is equivalent to adding an equal... | |
| George Albert Wentworth - Algebra - 1888 - 514 pages
...between — 4 and — 3 is — 1. Compare these results with results obtained in addition ; it is evident **that : Subtracting a positive number is equivalent to adding an equal negative number.** Subtracting a negative number is equivalent to adding an equal positive number. To subtract, therefore,... | |
| George Albert Wentworth - Algebra - 1888 - 514 pages
...it is evident that : Subtracting a positive number is equivalent to adding an equal negative number. **Subtracting a negative number is equivalent to adding an equal positive number.** To subtract, therefore, one algebraic number from another, change the sign of the subtrahend, and then... | |
| William Frothingham Bradbury - Algebra - 1889 - 444 pages
...left ; hence the algebraic difference, —2s. 47. From groups (B) and (A), (2) and (1), it follows **that subtracting a positive number is equivalent to adding an equal negative number, and** subtracting a negative number is equivalent to adding an equal positive number. 48. Illustrative Problems.... | |
| William Frothingham Bradbury, Grenville C. Emery - Algebra - 1889 - 428 pages
...OF ALGEBKAIC LITERAL EXPRESSIONS. 61. From group (C) we learn that, in general, the subtraction of **a positive number is equivalent to adding an equal negative number, and** the subtraction of a negative number is equivalent to adding an equal positive number. Therefore, for... | |
| George Albert Wentworth - Algebra - 1891 - 544 pages
...-а-(+Ъ) = -а-Ъ. (3) -а + (+Ъ) = -а+Ъ. -а-(-Ъ) = -а+Ъ. (4) From (I) and (3), it is seen **that subtracting a positive number is equivalent to adding an equal negative number.** From (2) and (4), it is seen that subtracting a negative number is equivalent to adding an equal positive... | |
| George Albert Wentworth - Algebra - 1891 - 380 pages
...subtracting a positive lumber is equivalent to adding an equal negative number. From (2) and (4), it is seen **that subtracting a negative number is equivalent to adding an equal positive number.** +a+(+b)=+a+b. To subtract one algebraic number from another, we have, therefore, the following rule... | |
| George Albert Wentworth - Algebra - 1894 - 200 pages
...is, the sum. of the absolute values of the numbers. 67. From the four cases of subtraction in § 64, **we see that subtracting a positive number is equivalent to adding an equal negative number, and** subtracting a negative number is equivalent to adding an equal positive number. To Subtract One Algebraic... | |
| William Frothingham Bradbury, Grenville C. Emery - Algebra - 1894 - 144 pages
...the algebraic difference is — 2 s. 50. From groups (B) and (A), pp. 53, 43, (2) and (1,) it follows **that subtracting a positive number is equivalent to adding an equal negative number, and** subtracting a negative number is equivalent to adding an equal positive number. Therefore, to subtract... | |
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