26=5(x+10)+3x whatsy answer how do i get it? ?

26 = 5 (x + 10) + 3x 
26 = 5x + 50 + 15x
26 = 5x +15x + 50
26 = 20x + 50
26 - 50 = 20x - 50
-14 = 20x
-14 / 20 = x
-0.7 = x

26=5(x+10)+3x
26=5x+50+3x
26=8x+50
26-50=8x+50-50
-24=8x
x=-3

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's