You can paint a 4 ft by 7ft rectangular wall using1 gallon of paint. How many gallons of paint will you need to cover a 16 ft by 28ft wall?

4 gallons.

Step-by-step explanation:

16 by 28 is 4 by 7 multiplied by 4. Therefore 4 is the answer.

(You have to divide 16 by 28 by 4 by 7).

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.