3 years ago

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

1 answer:

7 0

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

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