3x+x-15=25-x

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Solution for 3x+x-15=25-x equation:



3x+x-15=25-x
We move all terms to the left:
3x+x-15-(25-x)=0
We add all the numbers together, and all the variables
3x+x-(-1x+25)-15=0
We add all the numbers together, and all the variables
4x-(-1x+25)-15=0
We get rid of parentheses
4x+1x-25-15=0
We add all the numbers together, and all the variables
5x-40=0
We move all terms containing x to the left, all other terms to the right
5x=40
x=40/5
x=8

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