What is simplify-7(-0.2k-0.4)-7(-0.4k-0.6) ?

The solution to simplify-7(-0.2k-0.4)-7(-0.4k-0.6) is 4.2k+7

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simplify-7(-0.2k-0.4)-7(-0.4k-0.6)

simplify

- 7 (- 0.2 k - 0.4) - 7 (- 0.4 k - 0.6)

4.2 k + 7

Solution steps

- 7 (- 0.2 k - 0.4) - 7 (- 0.4 k - 0.6)

Expand

- 7 (- 0.2 k - 0.4) : 1.4 k + 2.8

= 1.4 k + 2.8 - 7 (- 0.4 k - 0.6)

Expand

- 7 (- 0.4 k - 0.6) : 2.8 k + 4.2

= 1.4 k + 2.8 + 2.8 k + 4.2

Group like terms

= 1.4 k + 2.8 k + 2.8 + 4.2

Add similar elements:

1.4 k + 2.8 k = 4.2 k

= 4.2 k + 2.8 + 4.2

Add the numbers:

2.8 + 4.2 = 7

= 4.2 k + 7

(2 x + 1) (- x - 3)

- (- \frac{1}{2})

\frac{528}{3}

(\frac{2}{3}) (\frac{1}{3})^{0}

(\frac{2}{3}) (\frac{1}{3})^{1}

What is simplify-7(-0.2k-0.4)-7(-0.4k-0.6) ?
The solution to simplify-7(-0.2k-0.4)-7(-0.4k-0.6) is 4.2k+7