20=-7(3a-2)

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Solution for 20=-7(3a-2) equation: 



20=-7(3a-2)

We move all terms to the left:

20-(-7(3a-2))=0



We calculate terms in parentheses: -(-7(3a-2)), so:

-7(3a-2)

We multiply parentheses

-21a+14

Back to the equation:

-(-21a+14)



We get rid of parentheses

21a-14+20=0

We add all the numbers together, and all the variables

21a+6=0

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

21a=-6

a=-6/21

a=-2/7

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