, 01.02.2020Axelamat

# Of three numbers, two are 1 2/3 and 12/7 . what should the third numbers be so that the average of all three is 2?

## Answers nelspas422

Let   x  =   third number

thus     (1 2/3 +12/7 + x )/3   = 2

( 5/3 + 12/7 + x)   =     6

(35 + 36) + 21x)/21    =   6     /  lcm of  3 & 7   = 21

71 + 21x  =    126

x   =  ( 126-71/21

=   55/21

The third number is   55/21 09389706948
-29/21

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