Question

What is the LCD for these fractions?
42/20 + 3/5

Answer 1

Well, actually, before you go about finding the LCD, you should reduce the first fraction.

Answer 2

Lowest common denominator

Answer 3

I know what an LCD is by the way.

Answer 4

Reducing the first fraction is the first step to finding it

Answer 5

Ok Lol.

Answer 6

is it 2.1?

Answer 7

42/20 simp. is 2.1 right?

Answer 8

2.1 = 2 + 1/10 = 2 1/10
It can also be written as the improper fraction

Answer 9

21/10

Answer 10

Yes, very good. So now we have...

21/10 + 3/5

Do you have an idea how to find the LCD?