Which equation could be used to solve problems involving the relationships between the angles?

A. 90 + (8a + 9) = (11 + 2a)

B. 90 - (8a + 9) = (11 + 2a)

C. (11 + 2a) - 90 = (8a + 9)

D. (8a + 9) - (11 + 2a) = 90

Fill in the blanks to solve 102 * 4 Step 1. 4 X blank Step 2. 4 X (100+blank) Step 3. 400 + blank Step 4. Blank

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