30+3x=20+7x

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Solution for 30+3x=20+7x equation: 



30+3x=20+7x

We move all terms to the left:

30+3x-(20+7x)=0

We add all the numbers together, and all the variables

3x-(7x+20)+30=0

We get rid of parentheses

3x-7x-20+30=0

We add all the numbers together, and all the variables

-4x+10=0

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

-4x=-10

x=-10/-4

x=2+1/2

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