watson08
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Given that the perimeter of the equilateral triangle is 21, solve for x. Round your answer to the nearest Whole number

Given that the perimeter of the equilateral triangle is 21 solve for x Round your answer to the nearest Whole number class=

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sqdancefan

The perimeter is the sum of the lengths of the sides. Since the triangle is equilateral, all sides are the same length.

... 3(2x -3) = 21

... 6x -9 = 21 . . . . simplify

... 6x = 30 . . . . . .add 9

... x = 5 . . . . . . . divide by 6

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