x,x+3=8

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Solution for x,x+3=8 equation: 



x.x+3=8

We move all terms to the left:

x.x+3-(8)=0

We add all the numbers together, and all the variables

x.x-5=0

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

x.x=5

x=5/1

x=5

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