Tinh hop li1, 35.18-5.7.282, 45-5(12+9)3, 24.(16-5)-16(24-5)4, 29(19-13)-19(29-13)5, 31(-18)+31(-81)-316, -12.47+(-12).52+(-12)7, 13.(23+22)-3(17+28)8, -48+48(-78)+48.(-21)
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