1、七年级上:一元一次方程50道练习题(含答案)一元一次方程50道练习题(1); (2)(3); (4);(5); (6)(7)(8)(9)5x+2=7x-8; (10)(11);(12);(13); (14) (15); (16)(17) (18)(19); (20) (21) (22)2(2x-1)-4(4x-1)-5(2x+1)-19=0(23) (24)(25) (26)234(5x-1)-8-20-7=1 (27)2(0.3x-4)-5(0.2x+3)=9 (28)2(x+3)-2(x+1)-5=0 (29)3x- (30) (31) (32)3x=2x+5 (33)2y+3=y1 (3
2、4)7y=43y (35)= (36)10x+7=12x53x (37)8x4+2x= 4x3 (38)2(3x+4)=6-5(x-7) (39) (40) (41) (42) (43) (44). x-=-1 (45) -=(46) 3(x+2)-(2x-3)=2(2x-3)-(x+2)(47) (x-2)-2-2=0 (48) 5(y8)5 4(2y7); (49)、; (50)、;(1)x =2; (2)x =2; (3)x =7; (4)x =1; (5)x =5; (6)x =;(7)x =; (8)x = (9)x=5; (10); (11)x=3; (12);(13)x=0; (14)x=6; (15); (16) 17. 18. 19 2021. x=8 22.x=-1 23.x=-3 24.x=9 25.x=26.x=1 27、x=-8028、x=-29、 30、24.96 31、x=132)x=5 33)y=4 34)y= 35)y= 36)x=12 37)x=38.x=3 39.x=- 40.x= 41. 42、=6 ; 43、2 ; 44 45. 46. 47. x=18648、 y 21 49、x; 50、x;