Question

Find the value of x. the answer choices are 5, 4, 6, or 129

Answer 1

the sum of the interior angles of a parallelogram is 360°,

we have the next angles equals

m

m

With this in mind, we can have the next equation

51+51+28x-11+28x-11=360

we sum similar terms

80+56x=360

we isolate the x

56x=360-80

56x=280

x=280/56

x=5