Adding
8 + a = 12
a = 4
11 - a = 9
a = 2
4 x a = 12
a = 3
a/9 = 8
a = 72
An equivalent fraction for 4/5 is
8/10 or 12/15 or 16/20 or 20/25, etc.
b + 7 = 15
b = 8
18 - b = 6
b = 12
b x 8 = 48
b = 6
28/b = 4
b = 7
Lowest terms for 8/32 is
1/4
c + 85 = 100
c = 15
c - 10 = 360
c = 370
9 x c = 63
c = 7
300/c = 6
c = 50
6 2/3 as an improper fraction is
20/3
2000 + 400 + d + 7 = 2,437
d = 30
700 - d = 350
d = 350
d x 8 = 160
d = 20
1500/d = 5
d = 300
6/7 + 4/7 =
10/7, which simplifies to 1 3/7
e + 47 = 159
e = 112
e - 82 = 101
e = 183
700 x e = 42,000
e = 60
20,000/e = 500
e = 400
3 3/4 - 1 1/4 =
2 2/4, which simplifies to 2 1/2