Question

Write an equivalent expression by distributing the "-" sign outside the

parentheses:
-(-9c – 5.9d + 7.9)

Answer 1

`9c+5.9d-7.9`

Explanation:

`-\left(-9c-5.9d+7.9\right)`

`\mathrm{Distribute\:parentheses}`

`=-\left(-9c\right)-\left(-5.9d\right)-\left(7.9\right)`

`\mathrm{Apply\:minus-plus\:rules}`

`-\left(-a\right)=a,\:\:\:-\left(a\right)=-a`

`=9c+5.9d-7.9`

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