How do I solve for x in Y in this parallelogram (2x+10)+(y+17)+(3x-20)?

Question

I believe they should equal= 180 because I only have three of the four degrees

Answer 1

no, if it is a parallelogram then all four angles = 360, and two will equal 180.

Opposite angles are equal and consecutive angles are supplementary

Thinking from what you put that 2x + 10 and 3x - 20 are opposite each other (?)

if so, set them equal and solve 2x+10 = 3x - 20

-x + 10 = - 20

-x = -30 so x = 30

then if x = 30 each of those angles is 70 degrees

then 70 +y + 17 = 180

y + 87 = 180 so y = 93