Question

The lcd of 7/90 and 119/150 is

Answer 1

7/90 and 119/150.

Now just look at the denominators:
90= 2* 3^2* 5
150= 2* 3* 5^2
LCM( 90, 150)= 2*3^2* 5^2= 450

Therefore, the least common denominator of 7/90 and 119/150 is 450~

Answer 2

Well first you have to find the least common multiple (LCM)...
90: 90 180 270 360 450 540 630 720 810 900
150: 150 300 450 600 750 900

Now you notice that they both have 450 in common and it's the LEAST common multiple unlike 900 which is the MOST.

After that they have to be rewritten with 450 as their denominator.

35/450 and 357/450 are your answers