Subtract rational numbers QuickChek use the additive inverse to find -24 4/5 -6 7/10

Answer 1

To subtract rational numbers, we need to find the common denominator for the fractions involved. In this case, the common denominator is 10.

First, we need to convert -24 4/5 and -6 7/10 to improper fractions:
-24 4/5 = -244/5
-6 7/10 = -67/10

Next, we can subtract the fractions:
-244/5 - (-67/10) = -244/5 + 67/10

To add these fractions, we need to find the common denominator, which is 10:
-244/5 + 67/10 = -244/5 * 2/2 + 67/10 = -488/10 + 67/10

Now that the fractions have the same denominator, we can add them:
-488/10 + 67/10 = -421/10

Therefore, -24 4/5 - 6 7/10 is equal to -421/10 or -42 1/10.