Respuesta :

mathstudent55

Sides LM and QR are congruent, so

2x + 11 = 3x - 9

-x + 11 = -9

-x = -20

x = 20

Angles M and R are congruent, so

y + 10 = 2y - 40

-y + 10 = -40

-y = -50

y = 50

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