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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

7x+(-4x)-15=0

We get rid of parentheses

7x-4x-15=0

We add all the numbers together, and all the variables

3x-15=0

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

3x=15

x=15/3

x=5

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