3x+x-5=7

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Solution for 3x+x-5=7 equation:



3x+x-5=7
We move all terms to the left:
3x+x-5-(7)=0
We add all the numbers together, and all the variables
4x-12=0
We move all terms containing x to the left, all other terms to the right
4x=12
x=12/4
x=3

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