13=4*a

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Solution for 13=4*a equation:



13=4*a
We move all terms to the left:
13-(4*a)=0
We add all the numbers together, and all the variables
-(+4a)+13=0
We get rid of parentheses
-4a+13=0
We move all terms containing a to the left, all other terms to the right
-4a=-13
a=-13/-4
a=3+1/4

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