Question

A sailboat’s sail has three sides that are all the same length. Each side measures x−10 units. The sail’s perimeter is 63 units. What is the value of x? Enter your answer in the box.

Answer 1

Explanation :
1) Write out the equation : X-10 + X-10 + X-10 = 63
2) combine like terms : 3x -30 = 63
3) Add 30 to both sides of the equation to cancel out 30 : 3x = 33
4) divide 3 from both sides of the equation : X = 11
Therefore, the value of x is 11