123-2x=140-5x

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Solution for 123-2x=140-5x equation: 



123-2x=140-5x

We move all terms to the left:

123-2x-(140-5x)=0

We add all the numbers together, and all the variables

-2x-(-5x+140)+123=0

We get rid of parentheses

-2x+5x-140+123=0

We add all the numbers together, and all the variables

3x-17=0

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

3x=17

x=17/3

x=5+2/3

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