a+a*7=50

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Solution for a+a*7=50 equation: 



a+a*7=50

We move all terms to the left:

a+a*7-(50)=0

Wy multiply elements

a+7a-50=0

We add all the numbers together, and all the variables

8a-50=0

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

8a=50

a=50/8

a=6+1/4

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