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Which equation can be used to find the answer?

A fence with four sections has a perimeter of 43 ft. Three of the sections have lengths of 8 ft, 12 ft, and 11 ft. What is the length of the fourth section?

x = 43 + 8 + 12 + 11

x + 8 + 12 + 11 = 43

x – 8 + 12 +11 = 43

x – 43 = 8 + 12 –11

x + 8 + 12 + 11 = 43

Step-by-step explanation:

The perimeter is the length of the 4 sections of fencing.

If x represents the fourth section and the perimeter is 43, then

x + 8 + 12 + 11 = 43, that is

x + 31 = 43 ( subtract 31 from both sides )

x = 12

The length of the fourth section is 12 ft

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555.99.

step-by-step explanation:

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