Question

The measures of two of the sides of an equilateral triangle are 3x + 15 in. and 7x – 5 in. What is the measure of the third side in inches?

Answer 1

key thing here is that we have an equilateral triangle

Answer 2

so all sides are equal

Answer 3

has three equal sides.

3x + 15 = 7x - 5
4x = 20
x = 5

so the third side is:

3*5 + 15 = 30. <=====

Answer 4

so

3x+15 = 7x-5

Answer 5

yes

Answer 6

Oh, well thanks guys :)