200-30x=(120-25x)*4

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Solution for 200-30x=(120-25x)*4 equation: 



200-30x=(120-25x)*4

We move all terms to the left:

200-30x-((120-25x)*4)=0

We add all the numbers together, and all the variables

-30x-((-25x+120)*4)+200=0



We calculate terms in parentheses: -((-25x+120)*4), so:

(-25x+120)*4

We multiply parentheses

-100x+480

Back to the equation:

-(-100x+480)



We get rid of parentheses

-30x+100x-480+200=0

We add all the numbers together, and all the variables

70x-280=0

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

70x=280

x=280/70

x=4

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