有理数的减法:6-9 (+4)-(-7) (-2.5)-5.9 (-5)-(-8) 0-有理数的减法:6-9 (+4)-(-7) (-2.5)-5.9 (-5)-(-8) 0-(-5) 1.9-(-0.6)
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有理数的减法:6-9(+4)-(-7)(-2.5)-5.9(-5)-(-8)0-有理数的减法:6-9(+4)-(-7)(-2.5)-5.9(-5)-(-8)0-(-5)1.9-(-0.6)有理数的减法
有理数的减法:6-9 (+4)-(-7) (-2.5)-5.9 (-5)-(-8) 0-有理数的减法:6-9 (+4)-(-7) (-2.5)-5.9 (-5)-(-8) 0-(-5) 1.9-(-0.6)
有理数的减法:6-9 (+4)-(-7) (-2.5)-5.9 (-5)-(-8) 0-
有理数的减法:6-9 (+4)-(-7) (-2.5)-5.9 (-5)-(-8) 0-(-5) 1.9-(-0.6)
有理数的减法:6-9 (+4)-(-7) (-2.5)-5.9 (-5)-(-8) 0-有理数的减法:6-9 (+4)-(-7) (-2.5)-5.9 (-5)-(-8) 0-(-5) 1.9-(-0.6)