Is this proportional? 12/15 = 3/5

If angle ywz = 17, what is angle wxy? ok so i'm confused on this because the triangles are congruent so that means they have the same measurement which would make wxy=17, but don't all triangles have total measures of 180 degress? ?me.

Solve the equation x/4 - 5= -8 -27 -12 -7 12

Write an inequality and solve each problem. for exercises 11 and 12, interpret the solution.