In any proportion the terms are in proportion by Composition and Division ; that is, the sum of the first two terms is to their difference, as the sum of the last two terms is to their difference. The Franklin Elementary Algebra - Page 122by Edwin Pliny Seaver, George Augustus Walton - 1881 - 297 pagesFull view - About this book
| Silvestre François Lacroix - Algebra - 1825 - 324 pages
...we make m = 1, we have simply 6 -f- a: b — a : : d + c : d — c, which may be enunciated thus ; The sum of the first two terms is to their difference...as the sum of the last two is to their difference. 225. The proportion a : b : : c : d may be written thus ; a : c : : b : d; we have then < c _, d .... | |
| William Smyth - Algebra - 1830 - 278 pages
...whence making ro= 1, we have b-\- a:b — a:;d + c:d — c a proportion which may be enunciated thus The sum of the first two terms is to their difference,...as the sum of the last two is to their difference. 180. The proportion n : l::c : d may be written thus, a : c::b : d, we have then e , d_ from which... | |
| Silvestre François Lacroix - Algebra - 1831 - 324 pages
...we make m •=. I, we have simply b + a ib — ai id -\- c id — c, which may be enunciated thus ; The sum of the first two terms is to their difference as the sum of th» last two is to their difference. 225. The proportion aib ncid may be written thus ; aici ib id;... | |
| Benjamin Peirce - Algebra - 1837 - 300 pages
...of the last two, or as the first term is to the third, or as the second is to the fourth. Likewise, the sum of the first two terms is to their difference,...as the sum of the last two is to their difference. Moreover, in finding these sums and differences, both the antecedents may be multiplied by the same... | |
| Benjamin Peirce - Geometry - 1837 - 216 pages
...of the last two, and as the first term is to the third, or as the second is to the fourth. Likewise, the sum of the first two terms is to their difference,...as the sum of the last two is to their difference. Two proportions, as A :B = CD and E : F = G '. Hy may evidently be multiplied together term by term,... | |
| Benjamin Peirce - Algebra - 1837 - 302 pages
...of the last two, or as the first term is to the third, or as the second is to the fourth. Likewise, the sum of the first two terms is to their difference,...as the sum of the last two is to their difference. Moreover, in finding these sums and differences, both the antecedents may be multiplied by the same... | |
| Thomas Sherwin - Algebra - 1841 - 320 pages
...the last two, as the difference of the first two terms is to thf. difference of the last two ; also, the sum of the first two terms is to their difference, as the sum of the last two terms is to their difference. Remark. It is manifest that the last two proportions might be written... | |
| Thomas Sherwin - Algebra - 1841 - 314 pages
...— c; changing the means, b-\-a:b — a = d-\-c:d — c. From the last two proportions, we infer, that, In any proportion, the sum of the first two terms is to the sum of the last two, as the difference of the first two terms is to the difference of the last... | |
| James Bates Thomson - Algebra - 1844 - 272 pages
...b : b — a : : d : d — c, &c. 7. Adding and subtracting, a-\-b:a — b::c-\-d:c — d. That is, the sum of the first two terms, is to their difference, as the sum of the last two, to their difference. Cor. If any compound quantities, arranged as in the preceding examples, are proportional,... | |
| William Smyth - 1847 - 276 pages
...whence making m = 1, we have b-\-a:b — a::d-\-c:d — c, a proportion which may be enunciated thus, The sum of the first two terms is to their difference, as the sum of the last turn is to their difference. 165. The proportion a : b : : c : d may be written thus, a : c : : b :... | |
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