3*(42-x)+4*x=154

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Solution for 3*(42-x)+4*x=154 equation: 



3(42-x)+4x=154

We move all terms to the left:

3(42-x)+4x-(154)=0

We add all the numbers together, and all the variables

3(-1x+42)+4x-154=0

We add all the numbers together, and all the variables

4x+3(-1x+42)-154=0

We multiply parentheses

4x-3x+126-154=0

We add all the numbers together, and all the variables

x-28=0

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

x=28

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