25=100-3x

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Solution for 25=100-3x equation: 



25=100-3x

We move all terms to the left:

25-(100-3x)=0

We add all the numbers together, and all the variables

-(-3x+100)+25=0

We get rid of parentheses

3x-100+25=0

We add all the numbers together, and all the variables

3x-75=0

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

3x=75

x=75/3

x=25

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