12
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2/3 and 3/4Looks like 12 here, so use form of one to convert both fractions to LCD form.4*2/4*3 and 3*3/3*48/12 and 9/12==========
Assume an additive expression.X5 + X3X3(X2 + 1)--------------------so,X3====Is the LCD
Fractions do not use decimals for the denominators. The LCD of 4, 3, and 2 (1/4, 1/3, 1/2) is 12. The LCD of 25, 33, and 50 is 1650 (2 x 3 x 25 x 11).