结果请用最简分数表示
21 +31 =21 -41 =52 -51 =74 -71 =87 -83 =101+52 =65 -32 =31 +51 =83 -41 =32 +31 =125 -125 =109 -101 =54 -52 =61 +31 =21 -81=83 +83 =21 -51 =74 +73 =1 -87 =65 +65 =1 -125 =53 +21 =109-103=75 -75 =83 +85 =61 +127=41 +43 =73 +21 =109-21 =109 -53 =59 +89 =18 +78 =1924 -1324 =1936 +336 =37 +47 =118- 18 =14 -19 =1213 - 313 =89 + 411 + 19 = 1 - 16 -16 =34 +14 +14 =78 -38 +38 =+=-=+=-=+=-=二、计算(能简算的要简算)
(1)58 -310 +14( 2)1-124 +548(3)34 +215 -112(4) 535 -223 +316( 5)57 -415 +27 -215(6)34 -﹙34 -23 ﹚(7) 2-18 -78( 8)4
75 +538 - 334(9)45 -14 +13(10) 910 + 320 - 315(11)1- 712 +34(12)2728 +﹙ 1314 -57 ﹚(16)1
875 +23(17)81 +152 +87(18)65 +43 -31(19)1112 - ( 16 +18 ) (20)11-710 -310(21)712 - ( 34 -12 ) 12 -(34 -38 )43 +75 +2154 +32 +51175 -514 +321-1817 -181107 -(73 -103 ) 1211+1615 +158512 +