# A triangle har a perimetr of 239cm. If the 2nd side is thrice the length of the 1st side and the 3rd side is 6 less than the 2nd side. Find the length of all sides. 1st side =

A triangle har a perimetr of 239cm. If the 2nd side is thrice the length of the 1st side and the 3rd side is 6 less than the 2nd side. Find the length of all sides. 1st side =
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Jayden-James Duffy
Let x be the length of the 1st side so that 3x is the length of the 2nd side and $3x-63x-6$ is the length of the 3rd side. The perimeter is 239 cm so we can write:
$x+3x+\left(3x-6\right)=239$
Solve for x:
$7x-6=239$
$x=35$
So, the 1st side measures 35 cm, the 2nd side measures $3\left(35\right)=105cm,$ and the 3rd side measures $3\left(35\right)-6=99cm.$