Lauren H. answered 10/15/18
Tutor
4.8
(24)
Experienced High School Chemistry Teacher
5(-7x-4y=-25) -35x - 20y = -125
7(-5x-9y=-24) -35x - 63y = -168
-83y = -293
y = 3.53
-5x-9y=-24
-5x - 9(3.53) = -24
-5x -31.77 = -24
-5x = 7.77
x = -1.55