3 1/2 - 1 1/3 = 2 1/6.
3+1/2−1−1/3
Rewrite it with everything separated.
Solve the whole numbers.
3 - 1 = 2.
Find the LCD of The Fractions.
LCD is 6.
3/6 - 2/6 = 1/6.
2 + 1/6 = 2 1/6.
She used 2 1/6 gallons of paint. Hope this helps and have a Nice day...! o/