20a+19=7(5a+1)-15a+12

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Solution for 20a+19=7(5a+1)-15a+12 equation: 



20a+19=7(5a+1)-15a+12

We move all terms to the left:

20a+19-(7(5a+1)-15a+12)=0



We calculate terms in parentheses: -(7(5a+1)-15a+12), so:

7(5a+1)-15a+12

We add all the numbers together, and all the variables

-15a+7(5a+1)+12

We multiply parentheses

-15a+35a+7+12

We add all the numbers together, and all the variables

20a+19

Back to the equation:

-(20a+19)



We get rid of parentheses

20a-20a-19+19=0

We add all the numbers together, and all the variables

=0

a=0/1

a=0

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