(1)x =2; (2)x =—2; (3)x =7; (4)x =1; (5)x =—5; (6)x =3 (7)x =1; 32171; (8)x =?. (9)x=5; (10)x?; (11)x=3; (12)y?;
7282
(13)x=0; (14)x=6; (15)x?67; (16)x??714.
x??8 17.9x?3x?22530?506x?16 18.5 19357 2025
21. x=8 22.x=-1 23.x=-3 24.x=9 25.x=185 26.x=1 27、x=-80
28、x=-
32 29、
529 30、24.96 31、x=1
32)x=5 33)y=-4 34)y=
25 35)y=-516 36)x=-12 37)x=6 38.x=3 39.x=-72 40.x=176 41.x?25 42、x=6 ; 43、x=-2
44.x??27 45. y?9 46.x?12 47. x=186
48、 y = 21 49、x=112; 50、x=10;
;
七年级上:一元一次方程50道练习题(含答案)
(1)x=2;(2)x=—2;(3)x=7;(4)x=1;(5)x=—5;(6)x=3(7)x=1;32171;(8)x=?.(9)x=5;(10)x?;(11)x=3;(12)y?;7282(13)x=0;(14)x=6;(15)x?67;(16)x??714
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