一元一次方程50道练习题(含答案)
(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?1??; (6)[(x?1)?2]??x
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????1x?1???3???5???1 ?4?3?2???
2?3?16)34[43(12x?14)?8]?32x?1 x?2?18x?x?2(18)69
2?3x?5?x?x4?2(20)23 (22)2(2x-1)-4(4x-1)-5(2x+1)-19=0
(
(23)3x?13x?5x?410.4x?0.90.1x?0.50.03?0.02x ?1???2 (24)??3462
(25)3[2(1x?1)?2]?212342?2x3
(27)2(0.3x-4)-5(0.2x+3)=9
(29)3x-2(x?3)?16?x?22?x?236
(31)19{17[15(x?23?4)?6]?8}?1
0.50.20.03(26)2{3[4(5x-1)-8]-20}-7=1
(28)2[(x+3)-2(x+1)]-5=0
(30)x?3?x?40.150.2?1.6
(32)3x=2x+5 (33)2y+3=y-1