3 years ago

I need help with 19 20 21

Mathematics

1 answer:

lord [1]3 years ago

5 0

19) 5c+c=-6+2
6c=-4
c=-4/6
c=-2/3

20) -20-8=-2e
-28=-2e
28/2=e
14=e

21)p-2w=2l
(p-2w)/2=l

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