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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

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



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

5(-4w+15)

We multiply parentheses

-20w+75

Back to the equation:

-(-20w+75)



We get rid of parentheses

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

We add all the numbers together, and all the variables

-1w-5=0

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

-w=5

w=5/-1

w=-5

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