M∠ABD=87° m∠ABC=9x−1° m∠CBD=6x+58 Encuentra m∠ABC

Mathematics

1 answer:

Softa [21]3 years ago

5 0

Answer: 9x - 1 = 9(2) - 1 = 17

Step-by-step explanation:

m∠ABD = m∠ABC + m∠CBD

87 = 9x -1 + 6x + 58

87 = 15x + 57

30 = 15x

2 = x

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