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Mathematics

1 answer:

vivado [14]3 years ago

5 0

Complementary angles have the sum of 90 degrees
Add angle A and angle B
(8x+27) + (6x-21) = 90
14x + 6 = 90
14x = 84, x = 6
Plug 6 into angle B equation
6(6) - 21 = 36 - 21 = 15

Solution:

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