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If 21 more than 3 times a number is -15, what is the number? -12 2 12 -2

If 21 more than 3 times a number is -15, what is the number? -12 2 12 -2
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If 21 more than 3 times a number is -15, what is the number?
-12
2
12
-2

asked
User Nathanesau
by
8.2k points

1 Answer

3 votes
21+3x=-15
3x=-15-21
3x=-36
x=-36/3
x=-12
answered
User Kelton
by
8.4k points
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