9-4(3-a)=2(a+10)-1

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Solution for 9-4(3-a)=2(a+10)-1 equation: 



9-4(3-a)=2(a+10)-1

We move all terms to the left:

9-4(3-a)-(2(a+10)-1)=0

We add all the numbers together, and all the variables

-4(-1a+3)-(2(a+10)-1)+9=0

We multiply parentheses

4a-(2(a+10)-1)-12+9=0



We calculate terms in parentheses: -(2(a+10)-1), so:

2(a+10)-1

We multiply parentheses

2a+20-1

We add all the numbers together, and all the variables

2a+19

Back to the equation:

-(2a+19)



We add all the numbers together, and all the variables

4a-(2a+19)-3=0

We get rid of parentheses

4a-2a-19-3=0

We add all the numbers together, and all the variables

2a-22=0

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

2a=22

a=22/2

a=11

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