12(-5)=4(2x+5)

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Solution for 12(-5)=4(2x+5) equation: 



12(-5)=4(2x+5)

We move all terms to the left:

12(-5)-(4(2x+5))=0

We add all the numbers together, and all the variables

-(4(2x+5))-60=0



We calculate terms in parentheses: -(4(2x+5)), so:

4(2x+5)

We multiply parentheses

8x+20

Back to the equation:

-(8x+20)



We get rid of parentheses

-8x-20-60=0

We add all the numbers together, and all the variables

-8x-80=0

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

-8x=80

x=80/-8

x=-10

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