Im really confused on this someone please help?

Question

Answer 1

∆LMN ≅ ∆QRS

(y + 10)° = (2y - 40)°

y = 50°

2x + 11 = 3x - 9

x = 20

Answer 2

The triangles are congruent

therefor QR = LM

3x - 9 = 2x + 11

 

Subtract 2x from both sides

x - 9 = 11

 

Add 9 to both sides

x = 20 <––––––