3.

Mathematics

1 answer:

soldi70 [24.7K]2 years ago

6 0

Answer:

Step-by-step explanation:

The four sides of a square are equal.

7x + 3 = 5x + 8 Subtract 5x from both sides

7x - 5x + 3 = 8 Combine the left

2x + 3 = 8 Subtract 3 from both sides

2x = 8-3 Combine the right

2x = 5 Divide by 2

x = 5/2

x = 2.5

That is not quite the answer

Side = 7x + 3

Side = 7*2.5 + 3

Side = 17.5 + 3

Side = 20.5

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