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《解方程》练习题 (1) 5 3 χ+2.4χ=6 (2)3.5: χ=5:4.2 (3)1.8χ-χ=2.4 (4) x 10 = 8.0 5.2 (5)6×3-1.8χ=7.2 (6)17-5χ=2.4+3 5 1 (7) 4 x = 5 2.1 (8) χ- 4 1 χ= 8 3 (9)12.6× 6 5 -2χ=8 (10) 2.1 x = 6.0 5.1 (11) 5 3 × 2 1 -χ= 5 1 (12) 3 2 χ+50%=42 (13)4χ-13=31 (14)4.5+8χ=27 2 1 (15)2χ+4.3×3=14 2 1 (16) χ×(1- 8 3 )=1 (17)χ- 4 1 χ= 8 3 (18)3 2 1 ÷4χ=2.5 (19) 4.0 x = 6 5.1 (20)1.6:χ= 5 2 : 10 3 (21)3χ-16×3=102 (22)x:1 9 7 = 20 1 : 3 1 (23)4χ+7.1=12.5 (24)χ:0.6= 3 1 :4 (25) 3 2 : 7 3 = 9 7 :χ (26) 0.3χ-2=9.1 (27) 7 x = 5.3 6.0 (28) 2 1 x- 4 1 = 8 1 (29) χ: 2 1 = 4 1 : 8 1 (30) 2 1 : χ= 4 1 : 8 1 (31)3χ+ 4 1 χ=2 13 2 (32) 14 5 : 7 5 =0.3: χ (33)131-χ=89.2 (34) 3 1 :0.25=80%: χ (35)4χ+7.1=12.5 (36) 4 3 - 2 1 χ= 5 1 (37) 3 2 χ- 2 1 χ+ 5 1 = 3 2 (38) 4 3 : 5 3 =χ:12 (39) χ- 2 1 χ= 10 7 (40) χ: 4 3 =12:3 (41)2.4χ-0.45×2=0.3 (42) 4 1 : 8 1 =χ:0.1 (43)6.3-5χ=4.1 (44)1.25:5=0.75:χ (45) 2 1 :χ= 4 3 :6 (46) 5 3 ×2.5-χ=0.6 (47)χ- 6 1 χ= 12 5 (48) 3 1 : χ= 5 1 : 7 6 (49) 10 x = 2 1.0 (50) 3 2 χ- 2 1 χ+1.2=3.4 (51)4:6=15:χ (52) 2 1 : 4 3 =χ: 3 2 查看更多

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