3x+42=2.5x

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Solution for 3x+42=2.5x equation: 



3x+42=2.5x

We move all terms to the left:

3x+42-(2.5x)=0

We add all the numbers together, and all the variables

3x-(+2.5x)+42=0

We get rid of parentheses

3x-2.5x+42=0

We add all the numbers together, and all the variables

0.5x+42=0

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

0.5x=-42

x=-42/0.5

x=-84

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