Free LCM Calculator determines the least common multiple (LCM) between 9 and 21 the smallest integer that is 63 that is divisible by both numbers. Least Common Multiple (LCM) of 9 and 21 is 63.
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Prime Factorization of 21.
3 21
7 7
1
Answer: Rachel's prediction is faster than the actual unit rate, and Theadore's prediction is slower.
Step-by-step explanation:
x+2x+3<36
3×<33
x<11
the number is less than 11
