Mathematics, 30.11.2019 21:31, kandigirl9990

Which equation could be used to solve problems involving the relationships between the angles? a) (12 + a) + (7a + 12) = 90 b) 90 + (12 + a) = (7a + 12) c) (12 + a) − (7a + 12) = 90 d) (7a + 12) − 90 = (12 + a)

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Which equation could be used to solve problems involving the relationships between the angles? a) (...