The first side of a triangle measures 4 in. less than the second side, the third side is 3 in. more than the first side, and the perimeter is 15 in. How long is the third side?
If s represents the length of the second side, which of the following represents the length of the third side?
Less would be minus and more is plus so the first side is 4 less than the second, or s - 4, and the third side is 3 more than the first, or 3 + s - 4. 3-4 + s = -1 + s or s - 1
