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Answer:
67⁰
Step-by-step explanation:
^pqr=180⁰-130⁰=50⁰
50⁰+ (5x-2)+(4x+15)=180⁰ ( angle sum property of triangle)
50⁰+5x-2+4x+15 = 180⁰
50⁰+15-2+9x =180⁰
15-2+9x=180⁰-50⁰
-2+9x=130-15
9x= 117
x=117/9
x= 13
^R= (4x+15)
= ( 4×13 + 15 )
= ( 52+15)
^R = 67⁰
Answer: