3x+(x-5)=15

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Solution for 3x+(x-5)=15 equation: 



3x+(x-5)=15

We move all terms to the left:

3x+(x-5)-(15)=0

We get rid of parentheses

3x+x-5-15=0

We add all the numbers together, and all the variables

4x-20=0

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

4x=20

x=20/4

x=5

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