30x=20(10-x)=700

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Solution for 30x=20(10-x)=700 equation: 



30x=20(10-x)=700

We move all terms to the left:

30x-(20(10-x))=0

We add all the numbers together, and all the variables

30x-(20(-1x+10))=0



We calculate terms in parentheses: -(20(-1x+10)), so:

20(-1x+10)

We multiply parentheses

-20x+200

Back to the equation:

-(-20x+200)



We get rid of parentheses

30x+20x-200=0

We add all the numbers together, and all the variables

50x-200=0

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

50x=200

x=200/50

x=4

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