3(2.5x+4)-12=30

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Solution for 3(2.5x+4)-12=30 equation: 



3(2.5x+4)-12=30

We move all terms to the left:

3(2.5x+4)-12-(30)=0

We add all the numbers together, and all the variables

3(2.5x+4)-42=0

We multiply parentheses

6x+12-42=0

We add all the numbers together, and all the variables

6x-30=0

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

6x=30

x=30/6

x=5

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