imaniee19
imaniee19
22-01-2020
Mathematics
contestada
9a-2b = -8
-7a + 3b = 12
Respuesta :
hirafathima358
hirafathima358
22-01-2020
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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