Question

The perimeter of a rectangular painting is 280 centimeters. If the length of the painting is 76 centimeters, what is its width?

Answer 1

Answer:

the width is 64cm

Step-by-step explanation:

a rectangle has 4 sides, each set of opposite sides are congruent, perimeter is the distance around an object, so we need to add up all 4 sides and it should equal 280cm, we know one side is 76, so our equation should look as follows:

76 + x + 76 + x = 280

2x + 152 = 280

2x = 128

x=64

you can check the answer but substituting 64 for x and seeing if it comes out to 280

76+64+76+64=280

280=280

Answer 2

Answer:

76x2 = 152

280 - 152 = 128

128 ÷ 2 = 64