123=-7(2k-4)-3

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Solution for 123=-7(2k-4)-3 equation: 



123=-7(2k-4)-3

We move all terms to the left:

123-(-7(2k-4)-3)=0



We calculate terms in parentheses: -(-7(2k-4)-3), so:

-7(2k-4)-3

We multiply parentheses

-14k+28-3

We add all the numbers together, and all the variables

-14k+25

Back to the equation:

-(-14k+25)



We get rid of parentheses

14k-25+123=0

We add all the numbers together, and all the variables

14k+98=0

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

14k=-98

k=-98/14

k=-7

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