15x-3(x+4)=18

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Solution for 15x-3(x+4)=18 equation: 



15x-3(x+4)=18

We move all terms to the left:

15x-3(x+4)-(18)=0

We multiply parentheses

15x-3x-12-18=0

We add all the numbers together, and all the variables

12x-30=0

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

12x=30

x=30/12

x=2+1/2

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