Find unknown 2

Find unknown denominator:

2/3 -5/? = 1/4

Correct result:

d =  12

Solution:

235d=14  23 12d5d 12d=14 12d   4 2 d5 12=1 3 d  5d=60=12  d=12   Verifying Solution:   r=235d=23512=14=0.25



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