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Verified answer
b = 7/3
c = 11/3
a + b / c
= 15/10 + 7/3 / 11/3
= (45 + 70 / 30) / 11/3
= 115 / 30 / 11/3
= 115 / 30 * 3/11
= 115 / 110
= 23/22