3x+9-30=4x-6

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Solution for 3x+9-30=4x-6 equation: 



3x+9-30=4x-6

We move all terms to the left:

3x+9-30-(4x-6)=0

We add all the numbers together, and all the variables

3x-(4x-6)-21=0

We get rid of parentheses

3x-4x+6-21=0

We add all the numbers together, and all the variables

-1x-15=0

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

-x=15

x=15/-1

x=-15

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