7 out of 12, 3 out of 9 and 7 out of 18

7 out of 12, 3 out of 9 and 7 out of 18

7 out of 12 = 21 out of 36
3 / 9 = 12 / 36
7 out of 18 = 14 out of 36

5 out of 12, 7 out of 18 and 9 out of 16

The least common multiple of 12, 18, and 16 is 144
5 out of 12 = 60 out of 144, 7 out of 18 = 54 out of 144 and 9 out of 16 = 81 out of 144

How much is it after 2 and 4 / 15, 3 / 4 and 1 and 9 / 20

2 and 4 / 15 = 2 + 4 / 15 = 34 / 15
3/4
1 and 9 / 20 = 1 + 9 / 20 = 29 / 20
Finding the least common multiple of denominator first
15. The least common multiple of 4 and 20 is 60
34/15=136/60
3/4=45/60
29/20=87/60
A: the three numbers are divided into 136 / 60 45 / 60 87 / 60

What is the reduction of M minus the square of M divided by N plus n minus the square of N divided by M

Solution; (M / (m-n) &# 178; + (n / (n-m) &# 178;
=m²/(m-n)²+n²/(n-m)²
=m²/(m-n)²+n²/(m-n)²
=(m²+n²)/ (m-n)²