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Allisa [31]
3 years ago
6

Solve. 21 + 3x = 3(-x + 3) - 12x= ​

Mathematics
1 answer:
mars1129 [50]3 years ago
4 0
X = -4.
explanation:
21+3x=3(-x+3)-12
21+3x=-3x+9-12
21+6x=9-12
21+6x=-3
6x=-24
x=-4
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