Hi student897!

What do you mean? Solving for x?

In this case

1) a(x+b) = c

a*x+a*b = c

minus a*b

a*x = c-a*b

divide by a (a is not equal to 0 )

2) 9x+2a=-3a+4x

minus 2a

9x = -3a+4x - 2a

9x = -3a-2a + 4x

9x = -5a + 4x

minus 4x

9x-4x = -5a

5x = -5a

divide by 5

x = -a

Do you understand?

Yours

Rapha