x+2x+(x-57)=455

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Solution for x+2x+(x-57)=455 equation:



x+2x+(x-57)=455
We move all terms to the left:
x+2x+(x-57)-(455)=0
We add all the numbers together, and all the variables
3x+(x-57)-455=0
We get rid of parentheses
3x+x-57-455=0
We add all the numbers together, and all the variables
4x-512=0
We move all terms containing x to the left, all other terms to the right
4x=512
x=512/4
x=128

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