The LCD of 1/2 and 2/3 is 6.
The LCD is 30.
3k/40 +k/18 factoring 40=2*2*2*5 18=2*3*3 LCD=2*2*2*5*3*3 LCD=360
15.
12
36
40
It is 8
it is 1
Assume an additive expression.X5 + X3X3(X2 + 1)--------------------so,X3====Is the LCD
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==========
LCD(2, 3) = 6.