Question 210538
The perimeter is the sum of the lengths of the three sides and this is given as 84 meters.
(6x-3)+(6x+4)+(8x+3) = 84
(6x+6x+8x)+(-3+4+3) = 84
20x+4 = 84 Subtract 4 from both sides.
20x = 80 Divide both sides by 20.
x = 4