7a+7=98

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Solution for 7a+7=98 equation: 



7a+7=98

We move all terms to the left:

7a+7-(98)=0

We add all the numbers together, and all the variables

7a-91=0

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

7a=91

a=91/7

a=13

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