Respuesta :

Answer:

93 degrees

Step-by-step explanation:

supplementary means the two angles = 180 degrees

Thus, 180-87=93

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Answer:

93

Step-by-step explanation:

Supplementary angles add to 180

Let x be the unknown angle

x+87 = 180

Subtract 87 from each side

x+87-87 = 180-87

x = 93

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