140=-5(3k-7)

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Solution for 140=-5(3k-7) equation: 



140=-5(3k-7)

We move all terms to the left:

140-(-5(3k-7))=0



We calculate terms in parentheses: -(-5(3k-7)), so:

-5(3k-7)

We multiply parentheses

-15k+35

Back to the equation:

-(-15k+35)



We get rid of parentheses

15k-35+140=0

We add all the numbers together, and all the variables

15k+105=0

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

15k=-105

k=-105/15

k=-7

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