30-5x=9-7x

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Solution for 30-5x=9-7x equation: 



30-5x=9-7x

We move all terms to the left:

30-5x-(9-7x)=0

We add all the numbers together, and all the variables

-5x-(-7x+9)+30=0

We get rid of parentheses

-5x+7x-9+30=0

We add all the numbers together, and all the variables

2x+21=0

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

2x=-21

x=-21/2

x=-10+1/2

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