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The perimeter of an equilateral triangle is 12 inches more than the perimeter of a square, and the side of the triangle is 7 inches longer than the side of the square.
Find the side of the triangle. (Hint: An equilateral triangle has three sides the same length.)
The side of the triangle is
in

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Answer:

The side of the triangle =16

Step-by-step explanation:

Let x be the side of the square

perimeter of the equilateral = 12 + perimeter of square

3( x + 7) = 12 + 4x

21 + 3x = 12 + 4x

x = 9

The side of the triangle = 7 + x

                                        = 7 + 9

                                        = 16

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