Question

9a-2b = -8 -7a + 3b = 12

Answer 1

9a-2b=-8.....1
-7a+3b=12.....2


So,
1 equation into 3 and 2 equation into 2.

Then,
18a-6b=-24
-14a+6b=24.


4a=0 a=0 .


Substitute a value in 2 equation.

b=4.



Hope it helped