Answer:
3x+y=43
Step-by-step explanation:
because
ML~=SR
43=43
63 + 93 +3x =180
156 + 3x = 180
3x = 180 - 156
3x = 24
x = 24/3
x = 8
To find y, we equate 43 = 3x + y because the triangles are congruent.
We just found x to be 8.
Here is the set up to find y.
43 = 3(8) + y
43 = 24 + y
43 - 24 = y
19 = y
Done!
