15+5x;x=3

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Solution for 15+5x;x=3 equation: 



15+5xx=3

We move all terms to the left:

15+5xx-(3)=0

We add all the numbers together, and all the variables

5xx+12=0

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

5xx=-12

x=-12/1

x=-12

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