Question

Only number 15 please

Answer 1

Hey You!

The LCM of 8 and 5 is 40. 2 × 2 × 2 × 5 = 40

Simplify:

120 / 40 = 3

160 / 40 = 4

Your simplified fraction is 3/4.

Answer 2

Okay, firstly, let's list some multiples of 5 and 8.

5 : 5, 10, 15, 20, 35, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90
8 : 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120

I've emboldened two of the multiples of 5 and 8 that are the exact same in both lists. They are 40 and 80. And the lesser multiple out of the two of them is 40. So we'll be using the number 40 to simplify $\frac{120}{160}$.

So let's divide, the numerator before the denominator. 120 ÷ 40 is 3. And 160 ÷ 40 = 4. Simplified, using the numbers we just found, our final answer is $\frac{3}{4}$.