Question

-9x-6y=15

9x-10y=145

Solve for x and y

Answer 1

y=-10

x-5

Explanation:

Answer 2

y = - 10 and x = 5

Explanation:

`- 9x - 6y = 15 \\ + 9x - 10y = + 145 \\ add \: the \: two \: equations \: together \\ 0 - 16y = 160 \\ y = (160)/( - 16) \\ y = - 10 \\ substitute \: for \: y\: in \: any \: equation \\ - 9x - 6( - 10) = 15 \\ - 9x + 60 = 15 \\ - 9x = 15 - 60 \\ - 9x = - 45 \\ x = ( - 45)/( - 9) \\ x = 5`