homework mix test # 4
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ii j 4x 4- 3y — 14 - y i x — 5y — 2 if (x,y) is a solution to the given system of equa- tions, then what is the value of x — y7. ® j4 ® 1 © 3 ® 18 l if 5a = 6b 4- 7 and a — b = 3, what is the value of ? ® 2 hint: for q i , which equation is the easier one to solve for one variable in terms of the other? if 7 c + fib — 15 and 3b - c = 2, what is the value of t? 2 hint: for q2, the second equation is in a convenient form for substitution. but …
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