Subtract 20

Subtract and add the following mixed numbers as given:
A=2 1/6 - 1 1/2 + 4 2/3.
B=4 1/4 - 1 1/3 + 1 1/12.
C= 2 1/4 -1 1/5 + 3 3/20.

Correct answer:

A =  5 13 = 16/3
B =  4

Step-by-step explanation:

a1=261=2+61=62 6+1=612+1=613=2612.1667 a2=121=1+21=21 2+1=22+1=23=121=1.5 a3=432=4+32=34 3+2=312+2=314=4324.6667  A=a1a2+a3=61323+314=61369+628=6139+28=632=316=531=5.3333
b1=441=4+41=44 4+1=416+1=417=441=4.25 b2=131=1+31=31 3+1=33+1=34=1311.3333 b3=1121=1+121=121 12+1=1212+1=1213=11211.0833  B=b1b2+b3=41734+1213=12511216+1213=125116+13=1248=4



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