What is the value of 12 1/6 - 2 3/8 -7 2/3 + 19 3/4?
A)21
B)21 7/8
C)21 1/8
D)22
E)22 7/8
Thanks in advance.
A)21
B)21 7/8
C)21 1/8
D)22
E)22 7/8
Thanks in advance.
There are two ways to do this: convert to fractions with a common denominator or convert to approximate decimals. For me, decimals were easier:
12 1/6 = 12.16
2 3/8 = 2.38
7 2/3 = 7.66
19 3/4 = 19.75
12.16 - 2.38 - 7.66 + 19.75
9.78 - 7.66 + 19.75
2.12 + 19.75
21.87
21 7/8
For fractions:
12 1/6 = 73/6 = 292/24
2 3/8 = 19/8 = 57/24
7 2/3 = 23/3 = 184/24
19 3/4 = 79/4 = 474/24
292/24 - 57/24 - 184/24 + 474/24
235/24 - 184/24 + 474/24
51/25 + 474/24
525/24
175/8
21 7/8
