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(7+2a)/3=50
We move all terms to the left:
(7+2a)/3-(50)=0
We add all the numbers together, and all the variables
(2a+7)/3-50=0
We multiply all the terms by the denominator
(2a+7)-50*3=0
We add all the numbers together, and all the variables
(2a+7)-150=0
We get rid of parentheses
2a+7-150=0
We add all the numbers together, and all the variables
2a-143=0
We move all terms containing a to the left, all other terms to the right
2a=143
a=143/2
a=71+1/2
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