Question

Please Help!! find the solution of this system of equations 4x - 5y= -12 -x + 5y= 18

Answer 1

4x - 5y= -12
-x + 5y= 18
-----------------add
3x = 6
x = 2

4x - 5y= -12
4(2) - 5y = -12
8 - 5y = -12
-5y = -20
y = 4
answer

(2, 4)

Answer 2

4x - 5y = -12
-x + 5y = 18
-------------------add
3x = 6
x = 6/3
x = 2

4x - 5y = -12
4(2) - 5y = -12
8 - 5y = -12
-5y = -12 - 8
-5y = -20
y = -20/-5
y = 4

solution is (2,4) <==