Question

if a+b=-2 a-b=12. find b ​

Answer 1

a+b=-2 ______ (1)

a-b =12 ______ (2)

___________

2a = 10

a=10/2

a=5

sub a=5 in equation 1

a+b=-2

5+b=-2

b=-2-5

b = -7

Answer 2

$a + b = - 2 \\ a - b = 12$

ADD BOTH EQUATIONS.

$2a = 10 \\ a = \frac{10}{2} \\ a = 5$

Now Substitute "a" in ny equation...lets in 1st eqn.

$a + b = - 2 \\ 5 + b = - 2 \\ b = - 2 - 5 \\ b = - 7$

#hope it help u...

BRAINLIEST PLSS