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七年级上:一元一次方程50道练习题(含标准答案)

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一元一次方程50道练习题

(1)2x?1? (3)

1x?4; (2)0.8x?0.1?0.5x?0.7 2153x?17?x; x?4?2x?3?x; (4)?2236

(5)

x?12x?3x?132123; (6)[(x?1)?2]??x ?1??23232463(7)2[1?

11?x110?3x1111(x?)]?(2x?)(8)(2x?3)?(2x?4)?(2x?5)?(2x?6) 33232345(9)5x+2=7x-8; (10)7?2x?1??3?4x?1??2?3x?2??1?0

(11)

5x?17?;?? 63(12)

7?2y?1??1?1?2y??2?2y?1?; 223(13)

3?22x?1x?21????; (14)??2x?1??2??x?2

662

(15)1?x1?3x??x2??3?2??2?1?????12;

7x?12(5x?1)?8?2(6x?9)(17)323

(x?1)?30%?(100?x)?25%?2(19)5x;

(21)1?1?16????3?1?2x?1????3????5???1 ?4?

2?3?(16)34[43(12x?14)?8]?32x?1 x?2?18x?x? (18)692

2?3x?5?x?x?2 (20)234

(22)2(2x-1)-4(4x-1)-5(2x+1)-19=0

3x?13x?5x?410.4x?0.90.1x?0.50.03?0.02x(23)3?1?4?6?22 (24)0.5?0.2?0.03

(25)32[23(14x?1)?2]?212?2x3

(26)2{3[4(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-2(x?3)?16?x?2?x?2? 3(?0)x?3?x?43260.150.2?1.6

(31)19{17[15(x?23?4)?6]?8}?1 (32)3x=2x+5 2y+3=y-1

(33)

七年级上:一元一次方程50道练习题(含标准答案)

一元一次方程50道练习题(1)2x?1?(3)1x?4;(2)0.8x?0.1?0.5x?0.72153x?17?x;x?4?2x?3?x;(4)?2236(5)x?12x?3x?132123;(6)[(x?1)
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