5a+7=3a+15

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Solution for 5a+7=3a+15 equation:



5a+7=3a+15
We move all terms to the left:
5a+7-(3a+15)=0
We get rid of parentheses
5a-3a-15+7=0
We add all the numbers together, and all the variables
2a-8=0
We move all terms containing a to the left, all other terms to the right
2a=8
a=8/2
a=4

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