The reciprocal 2

The reciprocal of 8 is subtracted from the reciprocal of 4, and the result is added to the reciprocal of 10. What fraction do you get?

Correct answer:

x =  9/40

Step-by-step explanation:

a=81=0.125 b=41=0.25 c=101=0.1  r1=ba=4181=8281=821=81=0.125  x=r1+c=81+101=405+404=405+4=409=0.225

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