SOLUTION: A poster in the shape of a triangle has one side that is five inches more the length of the shortest side, and another side that is three inches less than twice the shortest side.

Question 22359: A poster in the shape of a triangle has one side that is five inches more the length of the shortest side, and another side that is three inches less than twice the shortest side. Find the dimensions of the poster if its perimeter is 42 inches
Answer by queenofit(120) (Show Source): You can put this solution on YOUR website!
Ok, you have a triangle and you need the perimeter, so first you must find the formula for finding perimeter of a triangle. s+s+s=perimeter you know this is 42 inches.
Let x = the first side (the shortest side)
let x+5= the second side (5 more than the shortest side)
let 2x-3= third side (3 less than twice the shortest side)
x+x+5+2x-3=42
4x+2=42
4x=42-2
4x=40
x=10 your shortest side
x+5 =15 second side
2x-3= 17 third side

do you understand now?
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