Answer:
288
Step-by-step explanation:
Area of the wall = width x length = 32 x 54 = 1728 sq m
The number of cans for 1 coat = 1728/12 = 144 cans
The number of cans for 2 coats = 144 x 2 = 288 cans
B. 6
Explanation: 8(6+4)= 80
38+ 7(6)= 80
Hi,
Work:
Equation;

Collect like terms and calculate sum of positive numbers.

Move constant +63 to the right side and change its sign.

Subtract numbers.

Divide both sides of equation with 13.

Hope this helps.
r3t40