Answer:
19/24 yards
Explanation:
The total Michaela started with was ...
11/12 + 7/8 = 22/24 + 21/24 = 43/24 . . . . yards
She used a total of 1 yard, so has ...
(43 -24)/24 = 19/24
yards remaining.
Michaela has 19/24 yards (or 28.5 inches) of fabric left over.