4a+7a=121

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Solution for 4a+7a=121 equation: 



4a+7a=121

We move all terms to the left:

4a+7a-(121)=0

We add all the numbers together, and all the variables

11a-121=0

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

11a=121

a=121/11

a=11

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