15x+42=3x+18

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Solution for 15x+42=3x+18 equation: 



15x+42=3x+18

We move all terms to the left:

15x+42-(3x+18)=0

We get rid of parentheses

15x-3x-18+42=0

We add all the numbers together, and all the variables

12x+24=0

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

12x=-24

x=-24/12

x=-2

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