7-3(a+1)=9+a

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Solution for 7-3(a+1)=9+a equation: 



7-3(a+1)=9+a

We move all terms to the left:

7-3(a+1)-(9+a)=0

We add all the numbers together, and all the variables

-3(a+1)-(a+9)+7=0

We multiply parentheses

-3a-(a+9)-3+7=0

We get rid of parentheses

-3a-a-9-3+7=0

We add all the numbers together, and all the variables

-4a-5=0

We move all terms containing a to the left, all other terms to the right

-4a=5

a=5/-4

a=-1+1/4

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