solve by addiditon methode -5x-3y=-1, 6x +5y=-10

how to solve this problem by addition methode -5x -3y=-1, 6x + 5y=-10
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1 Answer

-5x-3y=-1⇒5(-5x-3y)=5(-1)⇒-25x-15y=-5 (A)

6x+5y=-10⇒3(6x+5y)=3(-10)⇒18x+15y=-30 (B)

(A)+(B): -7x=-35, 7x=35, x=5

-5x-3y=-1, -25-3y=-1, 3y-1=-25, 3y=-24, y=-8

SOLUTION: x=5, y=-8
by Top Rated User (1.2m points)

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