10+20=-3(2x+10)

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Solution for 10+20=-3(2x+10) equation: 



10+20=-3(2x+10)

We move all terms to the left:

10+20-(-3(2x+10))=0

We add all the numbers together, and all the variables

-(-3(2x+10))+30=0



We calculate terms in parentheses: -(-3(2x+10)), so:

-3(2x+10)

We multiply parentheses

-6x-30

Back to the equation:

-(-6x-30)



We get rid of parentheses

6x+30+30=0

We add all the numbers together, and all the variables

6x+60=0

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

6x=-60

x=-60/6

x=-10

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