2233(1)X- X= (2) 2X + = (3)70%X + 20%X = 3.6 7554 314(4)X×=20× (5)25% + 10X = (6) X - 15%X = 68 54 (7)X+38X=121 (10)6X+5 =13.4 (13)X÷27=716 (16) 125 ÷X=310 (19)X÷ 635=2645×1325 58)5X-3×5521=7 (11)3134X48 (14)X+738X=4 (17)3255 X = 72 (9) 23X÷14=12 (12)3X=38 (15)4X-6×23=2 (18)81169 X = 6×5120) 4x-3 ×9 = 29 ( ( (21) 1132x + x = 4 (22)X-21×=4 26103213(23)6X+5 =13.4 (24) X- X= (25) 4χ-6=38 5310 (26)5X=1519 (29)23X÷14=12 (32)X÷635=261345÷25 (35)4+0.7X=102 (38) X-38X=400 (27) 821X=415 30) 35X=2572 (33) X-0.25=14 36) 213X+2X=42 (39) X-0.125X=8 (28)X÷4155=28 (31)81169X=6×51 (34)X4=30% (37) X+14X=105 (40) 363X = 4 ( ( 313135(41)X+ X=18 (42) X×( + )= (43)x-0.375x= 7 (44)x×23+12=4×38 (47)0.36×5- 334 x = 5 (50)x- 0.8x = 16+6 (52)X+25%X=90 6812 (45) X-37X=12 (48) 23 (x- 4.5) = 7 (52)x- 45 x -4= 21 (53) X-387 X= 96(46)5 X-2.4×5=8 49) 12 x- 25%x = 10 ( 本文来源:https://www.wddqw.com/doc/ce3abfadd1f34693daef3ede.html