It would mean the world for some help.

m<ZXY - m<WXZ   = m<WXY  

Step-by-step explanation:

given:

point Z is in the interior of <WXY creating XZ.

if m<WXZ = 20

  m<WXY = 100

find:

what would equation would you set up to find the missing angle measure?

solution:

Since Z is interior of <WXY

m<ZXY - m<WXZ   = m<WXY

<WXY =  100  - 20  = 80°

therefore, the equation would be  m<ZXY - m<WXZ   = m<WXY  

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363