Answer:
15, 18, 21
Step-by-step explanation:
3, 6, 9, 12, 15, 18, 21...
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
Hope this helps! :)
y = 2x - 1
28:4=7
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2.4
5/12 * _ = 1
0.41666666666 x 2.4 = 1