How do you write the rational number 10.5 in the form a/b? can you me.

21/2

Work Shown:

10.5 = 10 + 0.5

10.5 = 10 + (1/2)

10.5 = (20/2) + (1/2)

10.5 = (20+1)/2

10.5 = 21/2

Alternative Route:

10.5 = 10.5/1

10.5 = 105/10 <--- multiply top and bottom by 10

10.5 = (21*5)/(2*5)

10.5 = 21/2 < cancel the common factors

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

it alot will look like this 4.4