Answer:
2.5 or 2+1/2
Step-by-step explanation:
2 (2/5) walls (x) = 6 rolls of paper (y), solve for x
12/5x = 6y
multiple both sides by 5 to clear your fraction
12x = 30y
now divide by 12 to leave x alone
x = 30/12y
now simplify your fraction with your greatest common denominator:
GCD = 6 so 30/12y becomes 5/2y
Convert to whole numbers:
5/2 = 2 + 1/2 or 5/2 = 2.5
so x = 2.5y
OR x (your walls) use 2.5 y (rolls of paper) each
