4x+(75-x)=125

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Solution for 4x+(75-x)=125 equation: 



4x+(75-x)=125

We move all terms to the left:

4x+(75-x)-(125)=0

We add all the numbers together, and all the variables

4x+(-1x+75)-125=0

We get rid of parentheses

4x-1x+75-125=0

We add all the numbers together, and all the variables

3x-50=0

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

3x=50

x=50/3

x=16+2/3

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