find the difference of the following fraction. a)7/11-4/11 b)5/7-7/11. c)2/15-1/20
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find the difference of the following fraction. a)7/11-4/11 b)5/7-7/11. c)2/15-1/20
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Step-by-step explanation:
1)
7/11-4/11
=7-4/11
=3/11
2)
5/7-7/11
Equating denominations by cross multiplication
=5*11-7*7/7*11
=55-49/77
=6/77
3)
2/15-1/20
Equating denominations without cross multiplication (by l.c.m. Method)
=2*4/15*4 - 1*3/20*3
=8/60-3/60
=8-3/60
=5/60
=1/12