-148=-3x+2(-3x-20)

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Solution for -148=-3x+2(-3x-20) equation: 



-148=-3x+2(-3x-20)

We move all terms to the left:

-148-(-3x+2(-3x-20))=0



We calculate terms in parentheses: -(-3x+2(-3x-20)), so:

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

We multiply parentheses

-3x-6x-40

We add all the numbers together, and all the variables

-9x-40

Back to the equation:

-(-9x-40)



We get rid of parentheses

9x+40-148=0

We add all the numbers together, and all the variables

9x-108=0

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

9x=108

x=108/9

x=12

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