12a+3a=0.5(-20a+10)

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Solution for 12a+3a=0.5(-20a+10) equation: 



12a+3a=0.5(-20a+10)

We move all terms to the left:

12a+3a-(0.5(-20a+10))=0

We add all the numbers together, and all the variables

15a-(0.5(-20a+10))=0



We calculate terms in parentheses: -(0.5(-20a+10)), so:

0.5(-20a+10)

We multiply parentheses

-10a+5

Back to the equation:

-(-10a+5)



We get rid of parentheses

15a+10a-5=0

We add all the numbers together, and all the variables

25a-5=0

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

25a=5

a=5/25

a=1/5

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