Question

How do you solve `7- 6( a + 2) = 9+ a`?

Answer 1

`a=-2`

Explanation:

`[0]" " 7-6(a+2)=9+a`

`[1]" " 7-7-6(a+2)=9-7+a`

`[2]" " -6a-12=2+a`

`[3] " "-6a+6a-12-2=2-2+a+6a`

`[4]" " -14=7a`

`[5]" " -14/7=a`

`[6]" " a=-2`