3x+14=2(5x-21)

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Solution for 3x+14=2(5x-21) equation: 



3x+14=2(5x-21)

We move all terms to the left:

3x+14-(2(5x-21))=0



We calculate terms in parentheses: -(2(5x-21)), so:

2(5x-21)

We multiply parentheses

10x-42

Back to the equation:

-(10x-42)



We get rid of parentheses

3x-10x+42+14=0

We add all the numbers together, and all the variables

-7x+56=0

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

-7x=-56

x=-56/-7

x=+8

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