jazmineatayde jazmineatayde

07-09-2018
Mathematics

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QUICK HELP❗️
can somebody check if these are right ?? Thanks ❤️

QUICK HELP can somebody check if these are right Thanks class=

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07-09-2018

3. 5, 9, 10 and 12 are wrong.

You mostly seem to leave out some minus signs:

2(-12 + k) = 2(-12) + 2k = -24 + 2k

-5(3-x) = -15 + 5x

-6(3-d) -18 + 6d

2(l-4) = 2l - 8

-(m-7) = -m + 7

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