Question

The parallelogram pictured below has a perimeter of 129. Find the value of y.

Answer 1

y = 2.5

Explanation:

2(17y + 6) + 2(10y - 9) = 129

34y + 12 + 20y - 18 = 129

54y - 6 = 129

54y = 135

y = 2.5