100-7x=150-9x

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Solution for 100-7x=150-9x equation: 



100-7x=150-9x

We move all terms to the left:

100-7x-(150-9x)=0

We add all the numbers together, and all the variables

-7x-(-9x+150)+100=0

We get rid of parentheses

-7x+9x-150+100=0

We add all the numbers together, and all the variables

2x-50=0

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

2x=50

x=50/2

x=25

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