7a-(3-a)=5a-18

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Solution for 7a-(3-a)=5a-18 equation:



7a-(3-a)=5a-18
We move all terms to the left:
7a-(3-a)-(5a-18)=0
We add all the numbers together, and all the variables
7a-(-1a+3)-(5a-18)=0
We get rid of parentheses
7a+1a-5a-3+18=0
We add all the numbers together, and all the variables
3a+15=0
We move all terms containing a to the left, all other terms to the right
3a=-15
a=-15/3
a=-5

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