7(19-10)+12=a

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Solution for 7(19-10)+12=a equation: 



7(19-10)+12=a

We move all terms to the left:

7(19-10)+12-(a)=0

We add all the numbers together, and all the variables

-a+12+79=0

We add all the numbers together, and all the variables

-1a+91=0

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

-a=-91

a=-91/-1

a=+91

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