An equilateral triangle has side lengths that measure x+4 inches. the perimeter of the triangle is 18.6 inches. write an equation to find the value of x.

3(x+4) = 18.6 or 3x+12 = 18.6

Step-by-step explanation:

Equilateral - All sides equal

Triangle - 3 sides

Since the perimeter is 18.6, we would need to add the sums of the sides. Since all three sides are equivalent, all we would have to do is multiply by 3, and that would be equivalent to the perimeter.

answer;

the correct answer

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