The angle measurements in the diagram are represented by the following expressions.
\qquad \blueD{\angle A} = \blueD{5x -15 ^\circ}∠A=5x−15
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start color #11accd, angle, A, end color #11accd, equals, start color #11accd, 5, x, minus, 15, degrees, end color #11accd \qquad \green{\angle B} = \green{2x +21^\circ}∠B=2x+21
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Step-by-step explanation:
write correctly
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Answer:
45 degrees
x= 12
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