Solve by using Substitution method- -2x+9y=-9 9x-2y=2 Step by step needed asap

Question

asked Sep 21, 2022 127k views

2 Answers

Bilal Abdeen · Answer 1 · 2022-09-22T06:15:30+0000

Answer:

Explanation:

-2x+9y=-9 (solve for x)

-2x= -9y-9

X = - 9y/-2 - - 9/2. X = 9y/2 + 9/2

9(9/2y+9/2)-2y=2

81y/2 + 81/2 - 2y = 2

81y/2 - 2y = 2 - 81/2. 81/2 - 2 = 77/2 and -81/2 +2 = -77/2

77/2 y = - 77/2

y = (-77/2)/(77/2)

y = - 1