A triangle has a perimeter of 50. If 2 of its sides are equal and the third side is 5 more than the equal sides, the length of the third side is .....
Answer: 20
Explanation
Let x= the length of two of the sides (the ones that are equal)
x + 5 = the length of the third side
x+ x+ x + 5 = 50 add all three sides
3x + 5 + 50
3x = 50 - 4
3x = 45
subtract 5 from both sides x = 15 divide by 3
The length of the third side= x + 5 = 20
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