mikurrjurdan
06.09.2019 •
Mathematics
What are the steps to answer -3(2r+7)=3
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Ответ:
distribute -3
-6r-21=3
add 21 to both sides, this causes the 21 on the left to cancel itself out.
-6r=24
divide each side by -6, this causes the -6 on the left side to cancel itself out.
r=-4
Ответ:
-6r -21=3
subtract-21 from 3 and you’ll get -18 and divide -18 and -6r and you get R= -3
Ответ:
0.42 = 42/100 = 21/50
The correct result would be D. 21/50.