15x+3x=31+x

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Solution for 15x+3x=31+x equation: 



15x+3x=31+x

We move all terms to the left:

15x+3x-(31+x)=0

We add all the numbers together, and all the variables

15x+3x-(x+31)=0

We add all the numbers together, and all the variables

18x-(x+31)=0

We get rid of parentheses

18x-x-31=0

We add all the numbers together, and all the variables

17x-31=0

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

17x=31

x=31/17

x=1+14/17

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