1、(1) 5 6 7 9 1 6 (2) 5 8 2 5 1 4 (3) 14 15 ( 2 3 1 5 ) (4) 19 20 ( 4 5 7 40 ) (5)7 6 ( 7 10 1 3 ) (6) 11 8 (2 3 1 4 ) (7)6.12 3 7 2.88 4 7 (8) 29 24 ( 5 24 4 9 ) (9) 18 11 ( 7 11 3 8 ) (10) 7 9 3 10 2 9 17 10 (11) 7 15 7 12 8 15 7 12 (12) 11 15 8 3 8 5 (13) 2 7 +( 9 14 1 2 ) (14) 3 4 5 12 1 3 (15) 5
2、6 - 3 10 + 1 6 - 7 10 (16) 7 9 +1 4 - 1 3 (17) 5 9 - ( 5 9 - 1 5 ) (18) 8 7 3 1 4 3 (19) 5 6 10 3 5 1 (20) 4 3 - 28 1 + 14 3 (21)1+ 4 3 12 7 (22) 12 5 + 8 7 24 7 (23) 8 17 27 7 27 20 (24)0.85+ 7 2 +1.15+ 7 5 (25) 5 12 3 4 1 12 (26) 7 10 3 8 1 8 (27) 4 15 5 6 +4 3 (28)4 5 2 3 1 5 (29)117 18 1 18 (30)
3、 5 17 4 51 2 3 (31) 7 10 ( 3 7 3 10 ) (32) 8 5 (3 4 3 8 ) (33) 5 6 ( 1 3 5 6 ) (34) 5 6 2 3 1 6 (35) 3 5 9 5 6 5 (36) 2 3 7 2 7 5 (37) 8 5 5 8 8 3 5 2 (38) 6 3 11 8 11 (39) 11 14 3 5 3 14 2 5 (40) 5 2 6 1 3 2 (41) 7 9 + 1 9 - 1 3 (42) 3 4 ( 2 5 1 4 ) (43)5 3 ( 2 1 4 1 ) (44) 10 3 + 5 1 3 1 (45) 9 8
4、( 6 1 + 3 1 ) (46) 7 2 + ( 4 3 + 7 5 ) (47) 8 5 ( 8 1 + 10 3 ) (48) 6 1 + 8 7 + 6 5 + 8 1 (49) 2 3 + 6 7 - 2 3 + 6 7 (50) 5 12 ( 5 12 - 1 10 ) (51) 3 8 ( 5 8 5 9 ) (52) 5 6 3 4 2 3 (53)2 12 7 3 2 (54) 1 12 + 3 8 +( 5 8 + 5 12 ) (55) 8 9 -( 1 18 + 7 9 ) (56) 7 9 + 1 12 - 11 18 (57)54 7 1 3 7 (58) 4 9
5、 3 10 5 9 7 10 (59) 5 7 ( 3 5 2 7 ) (60) 4 5 -( 1 5 1 3 ) (61) 6 1 8 5 6 5 8 3 (62) 5 7 9 4 9 5 5 3 (63) 4 3 3 1 6 5 (64) 3 11 5 11 17 (65)11 12 5 12 1 2 (66)5 7 8 5 3 8 X-7.7=2.85 5X-3X=68 4X+10=5 320=45+6X X-0.6X=8 x+8.6=9.4 522x15 13x 1.3 X+8.3=19.7 15x 30 3x+936 7(x-2)=7 3x+9=12 18(x-2)=27 12x=3
6、20+4x 5.37+x=7.47 153x=5 30x=85 1.8+2x=6 420-3x=170 3(x+5)=18 0.5x+9=40 6x+3x=36 1.5x+6=3x 53-x=8 40-8x=5 x5=21 48-20+5x=31 x+2x+8=80 200-x5=30 70x =4 45.6- 3x =1.6 9.8-2x=3.8 5(x+5)=100 x+3x=70 3(x+3)=50 二、提高类方程。 4(4x1)=3(22x) 7(2x-6)=84 5(x-8)=3x 7x-7=6x+4 (22-x+2=68x 8x-6x+30=12x+15 7(x+2)=5x+60
7、240(x7)=30 (20-8x)3=2x+1 (6x-40)8=5x-8 128x=3 (21+4x)2=10x+14 8x-156=3x-20 (2x+7)2=4x+14 4.55.67 46.32.42 10(1.673.3) 12.833.420.275.48 56.2516.4 3.3752.128 11.836.945.38 4.296.314.296.31 401.77 12.46.06 11.56(8.560.67) 4.632.051.98 101.529 5.1465 74.90.254 3.8438.43.8461.6 4.61.02 7.5450.15 57.143.
8、516 (30.125)8 2.40.25 78.7878 2.5(0.91.8)4.5 98.510.1 6.4323.2 0.2540.254 2.162.1699 6.90.16 4.2260.42740 5.41.250.50.8 3.9 (1.35) 2.57.5 (3.641.24) 46.246.240.25 5.40.99 X5=0.016 4.2X=4.284 15.6X=27 X3.5=4.05 0.8(1.2512.5) 0.83.21.25 (160.53.2)5 972.54 5.50.672(22.2) 3.74.54.43.7 2.512.50.48 22.8(69.7283.2) 0.8(100.34)0.25 25.44.80.652.6 3.81.250.8 6.52.02