Answer:
Step-by-step explanation:
n = # cup(s) of flour
1.5 muffins x 12 (dozen muffins) > fractions
3.5 cups of flour n
12 x 3.5 = 1.5 (n)
42 = 1.5 (n) > multiply 12 and 3.5
42/1.5 = n > divide 1.5 on both sides, cancels out on right
28 = n # cups of flour