10 - 5 1/8
Convert 5 1/8 into an improper fraction.
We do this by multiplying the denominator to the whole number and adding it to the numerator, and wee keep the denominator.
8 * 5 = 40 + 1 = 41/8
10 - 41/8
Convert 10 to a denominator of 8:
10 * 8 = 80
1 * 8 = 8
80/8 = 41/8
Subtract the numerators together and keep the denominator:
39/8
Convert to a mixed number:
4 7/8
Yes, it will always be a rational number. I'll expound on this by defining what a rational number is. It is any number that can be expressed as a fraction. Otherwise, it is called an irrational number with a non-terminating decimal expansion. So, although 1/3 has a non-terminating decimal expansion because it is equal to 0.33333333...., it is still a rational number because it can be expressed into a fraction.
Use distributive property
-28y+8y= -20y
