3x+100=9+10x

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Solution for 3x+100=9+10x equation: 



3x+100=9+10x

We move all terms to the left:

3x+100-(9+10x)=0

We add all the numbers together, and all the variables

3x-(10x+9)+100=0

We get rid of parentheses

3x-10x-9+100=0

We add all the numbers together, and all the variables

-7x+91=0

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

-7x=-91

x=-91/-7

x=+13

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