7x+4x-X=8+53-21

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Solution for 7x+4x-X=8+53-21 equation:



7x+4x-x=8+53-21
We move all terms to the left:
7x+4x-x-(8+53-21)=0
We add all the numbers together, and all the variables
7x+4x-x-40=0
We add all the numbers together, and all the variables
10x-40=0
We move all terms containing x to the left, all other terms to the right
10x=40
x=40/10
x=4

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