-28=(-0.4k)

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Solution for -28=(-0.4k) equation: 



-28=(-0.4k)

We move all terms to the left:

-28-((-0.4k))=0



We calculate terms in parentheses: -((-0.4k)), so:

(-0.4k)

We get rid of parentheses

-0.4k

Back to the equation:

-(-0.4k)



We get rid of parentheses

0.4k-28=0

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

0.4k=28

k=28/0.4

k=70

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