-9+13=x

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Solution for -9+13=x equation:



-9+13=x
We move all terms to the left:
-9+13-(x)=0
We add all the numbers together, and all the variables
-1x+4=0
We move all terms containing x to the left, all other terms to the right
-x=-4
x=-4/-1
x=+4

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