-7 2/3 + (-5 1/2) + 8 3/4=

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square