945
63/7 * 21 = 45/7 * 21 = 45*3 = 135
21 times.
of course I guess
divide 45 by 5 and multiply by 3 45 divided by 5 is 7 times 3 is 21.
21/45= 7/15
Oh, dude, let me break it down for you. So, like, 21 goes into 45 two times, with a remainder of 3. You divide 45 by 21, get 2, and then you're left with 3 extra. It's like when you try to fit into your high school jeans after a big Thanksgiving dinner - it's just not gonna happen perfectly, ya know?
LCM of 21 and 45=315 Factors of 21= 3x7 Factors of 45=3x3x5 Lcm= 3x5x7x3=315
It is written as 21:45
45
Factors of 21: 1, 3, 7, 21 Factors of 45: 1, 3, 5, 9, 15, 45
45/21 = 15/7
45