100(x-3)=50(9-x)

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Solution for 100(x-3)=50(9-x) equation: 



100(x-3)=50(9-x)

We move all terms to the left:

100(x-3)-(50(9-x))=0

We add all the numbers together, and all the variables

100(x-3)-(50(-1x+9))=0

We multiply parentheses

100x-(50(-1x+9))-300=0



We calculate terms in parentheses: -(50(-1x+9)), so:

50(-1x+9)

We multiply parentheses

-50x+450

Back to the equation:

-(-50x+450)



We get rid of parentheses

100x+50x-450-300=0

We add all the numbers together, and all the variables

150x-750=0

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

150x=750

x=750/150

x=5

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