SOLUTION: The first side of a triangle is twice as long as the second side. The remaining side is 9 m longer than the second side. The perimeter is 53 m. How long is each side?

Question 941558: The first side of a triangle is twice as long as the second side. The remaining side is 9 m longer than the second side. The perimeter is 53 m. How long is each side?
Answer by srinivas.g(540) (Show Source): You can put this solution on YOUR website!
let x be the length of second side
first side = 2x
third side = x+9
perimeter ( sum of length of all 3 sides) = 53 m
x+2x+x+9 = 53
4x+9 =53
move 9 tot he right
4x=53-9
4x= 44
diivde with 4 on both sides

x=11
length of fist side (x) =11 m
length of second side(2x) =2*11 =22 m
length of third side(x+9) =11+9 = 20 m
Result : lengths all 3 sides as follows 11 m,22 m,20 m

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