3X+2X=30-x

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Solution for 3X+2X=30-x equation: 



3X+2X=30-X

We move all terms to the left:

3X+2X-(30-X)=0

We add all the numbers together, and all the variables

3X+2X-(-1X+30)=0

We add all the numbers together, and all the variables

5X-(-1X+30)=0

We get rid of parentheses

5X+1X-30=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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