Reciprocal of mixed number

Find the reciprocal of 1 2/5.

Correct answer:

b =  5/7

Step-by-step explanation:

a=152=1+52=51 5+2=57=1.4  b=1/a b=1:57  b=1/a=1/1.4=750.7143   Verifying Solution:   x=a b=1.4 0.7143=1

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