7a+19=-2a+55

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Solution for 7a+19=-2a+55 equation: 



7a+19=-2a+55

We move all terms to the left:

7a+19-(-2a+55)=0

We get rid of parentheses

7a+2a-55+19=0

We add all the numbers together, and all the variables

9a-36=0

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

9a=36

a=36/9

a=4

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