100-x+30+4x-7x=100

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Solution for 100-x+30+4x-7x=100 equation: 



100-x+30+4x-7x=100

We move all terms to the left:

100-x+30+4x-7x-(100)=0

We add all the numbers together, and all the variables

-4x+30=0

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

-4x=-30

x=-30/-4

x=7+1/2

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