a+12=19.

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Solution for a+12=19. equation: 



a+12=19.

We move all terms to the left:

a+12-(19.)=0

We add all the numbers together, and all the variables

a+12-19=0

We add all the numbers together, and all the variables

a-7=0

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

a=7

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