Question

Solve 10th question plzzz

Answer 1

multiply first equation by 3

9x-15y-12=0

add it with 2nd equation

2y+7-9x=0

we get

-13y-5=0

y=-5/13

put it in 2nd equation

2*(-5/13)+7-9x=0

-10/13+7=9x

81/13=9x

x=9/13