In ΔSTU, m, angle, S, equals, left parenthesis, 9, x, plus, 7, right parenthesis, degreesm∠S=(9x 7) ∘ , m, angle, T, equals, left parenthesis, 5, x, minus, 2, right parenthesis, degreesm∠T=(5x−2) ∘ , and m, angle, U, equals, left parenthesis, x, plus, 10, right parenthesis, degreesm∠U=(x 10) ∘ . Find m, angle, U, .m∠U



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