7a+1=4a+40

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Solution for 7a+1=4a+40 equation: 



7a+1=4a+40

We move all terms to the left:

7a+1-(4a+40)=0

We get rid of parentheses

7a-4a-40+1=0

We add all the numbers together, and all the variables

3a-39=0

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

3a=39

a=39/3

a=13

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