-7=7-2a

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Solution for -7=7-2a equation:



-7=7-2a
We move all terms to the left:
-7-(7-2a)=0
We add all the numbers together, and all the variables
-(-2a+7)-7=0
We get rid of parentheses
2a-7-7=0
We add all the numbers together, and all the variables
2a-14=0
We move all terms containing a to the left, all other terms to the right
2a=14
a=14/2
a=7

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