Rename 3/4 and 2/5 using 20 as the common denominator

Let’s use 2 methods to do this:

First, let’s try cross multiplying:

3/4=x/20

2/5=x/20

20 times 3 = 60

60 divided by 4 is 15, so 3/4 = 15/20

20 times 2 = 40

40 divided by 5 is 8, so 2/5 = 8/20

The next method:

What time 4 equals to 20? What times 5 equals to 20?

4 times FIVE equals to 20

For the fraction of 3/4, multiply the numerator and the denominator by five to get your answer of 15/20.

5 times FOUR equals to 20

For the fraction of 2/5, multiply the numerator and the denominator by four to get your answer of 8/20.

Hope I helped!

step-by-step explanation:

i found the koficent of the linear function and i foun c acordind to the strict formula y=kx+c and then i took 2 as an x and replacet it on the formula i found and then foun the y

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.