4+x,-8=9

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Solution for 4+x,-8=9 equation: 



4+x.-8=9

We move all terms to the left:

4+x.-8-(9)=0

We add all the numbers together, and all the variables

x.-13=0

We move all terms containing x to the left, all other terms to the right

x.=13

x=13/1

x=13

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