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Varvara68 [4.7K]
3 years ago
13

-3x=21

le" class="latex-formula">

​
Mathematics
2 answers:
Semenov [28]3 years ago
6 0
X=-7 divide both side by 3. Any expression divided by itself equals 1. Dividing a positive and a negative equals a negative. Calculate the quotation. Then you get X=-7
frutty [35]3 years ago
5 0

Answer:

x=7

Step-by-step explanation:

21/3=7

x=7

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