文档介绍:1
(1) 7x 6 = 16-3x
(2) 2(3 一 x) =「4(x 5)
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(3)
⑷2x
1 1
x (x - 1)
2 |L 2
的解满足|x—1=0,则m的值是多少?
3
(59)解关于x的方程 山 =△ aa=b=0
a b
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(60) 3 - 于「
(6D宁+号=1
(62) - x 5 = 2 x
(63) 5 x-8 -8 = 7 2x-3
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(64) 2x-1=5x-7
(65)3”—3
13
30
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(66) =3
(67)
2x — 4 x — 7 2 -
3 6
(69) 2x — 2 2 — 2x =1
32
(68)
(70) 7x 6=8_3x
(71)
x 1 2 x-1 2x 3
2 3=6
(72) 2 x - 6 = 0
(73)
x — 3 = 2
(74)如果方程
5
m x
2
4
m35x与方程写=咛叮的解相同,求m的值
(75) x-3(x+2)=6
(76)
(78) IL z+ 1
9 7
5
33
(77) 2x+3=x — 1
=2z—
(79) 2x— 1 = — x+5
(80) ◎二y+1
5
(81)
(82) 3 (x— 2)— 2 (x — 3)= 5x
(83)
(84) 4 35% 3 21-x = 15-2x 20% -1
(85)
2
(3x
(86) 亠―1 j —6】十4> = 1
2 丿 」J
(78) IL z+ 1
9 7
5
34
18
x
x-
(87) 2{3[4 (5x— 1)— 8] -20} - 7= 1 (88)
35
(90)
-8x -3x 5x -
2
(92)x + 1= 5 X
6
(93) 7(2x-1)-3(4x-1)=4(3x+2)-1
(94) 5x-2(x-1)=17
(95) (5y+1)+ (1-y)= (9y+1)+ (1-3y)
(89) x— 2[ x— 3 (x+ 4)— 5] = 3{2x— [x— 8 (x— 4) ]} — 2
9 19
(91)7x+ 2 ( -x+「6 )= x-「6
36
x
x-
(87) 2{3[4 (5x— 1)— 8] -20} - 7= 1 (88)
17
(96) 2x - 3 = 5x 7 9x
(97) x
(98) 3x -2 = 1 - 2(x T)
(99)
2x1 5 x - 1
(10o)|x-8(2x-1)=1
(101)— 5+ 0. 5x = 10
(103)
(104)有理数a,b,c在数轴上的位置如图所示,且
(102)
a = b,化简 c_a| +|c_b| +|a+ 耳
(105) 如图,BD平分/ ABC,BE分/ ABC分2:5两部分,/ DBE=21 ,求/ ABC的度数.
37
x
x-
(87) 2{3[4 (5x— 1)— 8] -20} - 7= 1 (88)
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(106)如图,点C分线段AB为5 : 7,点D分线段AB为5 : 11,已知CD = 2 cm,求
AB的长。
A DC B
(107)甲、乙、丙三个工厂共同筹办一所厂办学校,所出经费不同,其中甲厂出总
2 1
数的三,乙厂出甲丙两厂和的 ,已知丙厂出了 16000元。这所厂办学校总经费是多少?
7
2
(108)
2 x 1 x - 1 小
3
3 6
(109)
4x 1 = 2x 1
(110)
10
x — 10 x =1
7
(111)
2x - 3