2a+13=7

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Solution for 2a+13=7 equation: 



2a+13=7

We move all terms to the left:

2a+13-(7)=0

We add all the numbers together, and all the variables

2a+6=0

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

2a=-6

a=-6/2

a=-3

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