In circle XX, m, arc, Y, Z, equals, 138, degreesm
YZ
⌢
=138
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. Solve for xx if m, angle, Y, X, Z, equals, left parenthesis, 8, x, minus, 31, right parenthesis, degreesm∠YXZ=(8x−31)
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. If necessary, round your answer to the nearest tenth.