7a-5=21+15

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Solution for 7a-5=21+15 equation: 



7a-5=21+15

We move all terms to the left:

7a-5-(21+15)=0

We add all the numbers together, and all the variables

7a-5-36=0

We add all the numbers together, and all the variables

7a-41=0

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

7a=41

a=41/7

a=5+6/7

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