Answer: 648 3/4 -(-282 1/2) = 931 1/4
Step-by-step explanation:
To find the difference, you subtract.
Subtracting a negative is like adding. (multiply the parentheses by -1)
648 3/4 -(-282 1/2) -1 × -282 1/2 = +282 1/2
3/4 + 1/2 = 1 1/4 .Keep the 1/4 ad "carry" 1 to the units place
648 3/4 +282 1/2) = 931 1/4