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e-lub [12.9K]
3 years ago
7

7. solve. 3x + 3 = 21 (1 point)

Mathematics
2 answers:
kakasveta [241]3 years ago
8 0
The answer is 6. Subtract three from both sides, then divide by three and x=6
Ket [755]3 years ago
7 0
3x+3=21
     -3   -3
3x=18

Divide both sides by 3 

X=6

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