8x-30=90+4x

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Solution for 8x-30=90+4x equation: 



8x-30=90+4x

We move all terms to the left:

8x-30-(90+4x)=0

We add all the numbers together, and all the variables

8x-(4x+90)-30=0

We get rid of parentheses

8x-4x-90-30=0

We add all the numbers together, and all the variables

4x-120=0

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

4x=120

x=120/4

x=30

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