7*(10-3x)=5*(15-4x)

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Solution for 7*(10-3x)=5*(15-4x) equation: 



7(10-3x)=5(15-4x)

We move all terms to the left:

7(10-3x)-(5(15-4x))=0

We add all the numbers together, and all the variables

7(-3x+10)-(5(-4x+15))=0

We multiply parentheses

-21x-(5(-4x+15))+70=0



We calculate terms in parentheses: -(5(-4x+15)), so:

5(-4x+15)

We multiply parentheses

-20x+75

Back to the equation:

-(-20x+75)



We get rid of parentheses

-21x+20x-75+70=0

We add all the numbers together, and all the variables

-1x-5=0

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

-x=5

x=5/-1

x=-5

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