7X-10x=100-4x-9

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Solution for 7X-10x=100-4x-9 equation: 



7X-10X=100-4X-9

We move all terms to the left:

7X-10X-(100-4X-9)=0

We add all the numbers together, and all the variables

7X-10X-(-4X+91)=0

We add all the numbers together, and all the variables

-3X-(-4X+91)=0

We get rid of parentheses

-3X+4X-91=0

We add all the numbers together, and all the variables

X-91=0

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

X=91

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