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bazaltina [42]
3 years ago
12

Please help

Mathematics
1 answer:
vfiekz [6]3 years ago
5 0

Answer:

Step-by-step explanation:

3x + 7 + 9x - 43 = 180

                    12x = 216

                      x = 18

m∠4 = 3(18) + 7 = 61°

m∠5 = 9(18) − 43 = 119°

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