5x+85-7x=100-45-X

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Solution for 5x+85-7x=100-45-X equation: 



5x+85-7x=100-45-x

We move all terms to the left:

5x+85-7x-(100-45-x)=0

We add all the numbers together, and all the variables

5x-7x-(-1x+55)+85=0

We add all the numbers together, and all the variables

-2x-(-1x+55)+85=0

We get rid of parentheses

-2x+1x-55+85=0

We add all the numbers together, and all the variables

-1x+30=0

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

-x=-30

x=-30/-1

x=+30

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