3(-5a-4)=3(1-a)-3

Solution for 3(-5a-4)=3(1-a)-3 equation:

3(-5a-4)=3(1-a)-3

We move all terms to the left:

3(-5a-4)-(3(1-a)-3)=0

We add all the numbers together, and all the variables

3(-5a-4)-(3(-1a+1)-3)=0

We multiply parentheses

-15a-(3(-1a+1)-3)-12=0


We calculate terms in parentheses: -(3(-1a+1)-3), so:

3(-1a+1)-3

We multiply parentheses

-3a+3-3

We add all the numbers together, and all the variables

-3a

Back to the equation:

-(-3a)


We get rid of parentheses

-15a+3a-12=0

We add all the numbers together, and all the variables

-12a-12=0

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

-12a=12

a=12/-12

a=-1