练
1
2(x _1) =4
一儿一次方程计算训
、
4
、
75 -3x =8x1
、 10-2x -3(x -1) =13 、
125(2x-1)-3(3 x-1)-2(5 、
3(x 1) _2(x 2) =2x 3 14 、 2
^_22L^=6^7_1 17
2 、
5
1 1 、—(_x -1) -1=1 、1 -38 - x - -2 15 - 2x 2 2 1 1
x - 丄(3_2x) =1 5 2 1 9x
?_2=0 9 、x_3(1 _2x) =9 、一 x - 6
2
11
x-1)+1=0
15
18
=4x
20 22 24 2613
、2(y — 2) _3(4y 一1) =9(1 —
y)
、0.4-0.6(x-3)
x
1 3( x (x - 7) 3 5
7)
3 — x 21
3
16
1-x x - 3
2 3 1 19
、 3 |(2 4
21 、
23
、 25 、
(27
30
[1〕x —1〕—6] +石=1 2 [3 4 ^5 丿 J
x 1 x -2 4-X “ 3 6 2 x 0.17-0.2x ’ 、 1 0.7 0.03
3 0.1x -0.2 x 1 0.5 0.02
-、-3 3 3 (29) 8— - X= 2 3
4
3x 1 小 3x -2 2x 3 2 10 5 1 1 1 -(x 15) (x-7) 5 2 3
—一口「1.6
0.2
0.5
、
(28) 6X- 10=8
9 10
) 54- 7X= 5
2
() 3 - 12 X=—
5
(31) 2( X- 1) = 4 (32) 2(6 -2)= 8
(34) 2( X2) + 2=X+ 1 (35) 3- X= 2- 5( X- 1) (33) 5- 3X= 8X+ 1
(37) 7 (4 — X)= 9 (X — 4) = 5(32 - X) (36) 3 (38) 128— 5(2X+3)=73
1.7X + 4.8+ 0.3X = 40) 4X7.24= 100 (39) (41) 3 (X+1) - (2X -4) = 6
(42) 7.8 (44) 7X — 8 = 2X + 27 (43) 3 (X - 12) + 23 = 35
3X+ 7X +10 = 90 (45) (46) (7X - 4) +3 (X - 2) = 2X +6 47) 80空=20
(48) 5X -18 = 3^2X (49) (2X — 1)+ 10=37 (50) 1.6X + 3.4X— X — 5 = (51) 12X + 8X — 12= 28 27 (4 — X )= 4X
2 (3X — 4) + 52) 3 (- X+2)吒=(X+2) (54) X 2 (53) (3X + 5)吃= (5X - 9)
2 (55) 2X + 5= 3
3
X=3
(56) 70%X + 20%X = 3.6 (59) X - 15%X = 68 (62)
12
4
3 _
1 4
(57) XX- =20 X—
8
(58) 25% + 10X = (61) 5X — 3X—
5
(60) X + -X = 121
21
(63) 6X + 5 =13.4 (67) (71)
7
X 1 (64) 4 4
2
4X — 6X=2 (68)
3
(65) (69)
3X=3 12 3
1\吠=10
(66)
宀L
7 16
8
X= 3
3
(72) X宁色=些X翌
51
35 45 25
(73) 4X- 3 冷=29
1 / 2
2 6 3 2
(78) 2(x 一2.6) =8
(74) 1X + 1X = 4
(75) =4
X — 21 X—
10
3
(76) x 1 x = 20
4
(79) 6X + 5 =13.4
(82) 5X=—
、,15
19 25 72
(83)
8
(86) -X=-
3 5
21 8 9
X=
4
2 13
(80) 5 X-3 X=10 (81) 4X — 6= 38
15 1 16
(84) X 十一-
4 15 5 28
(85) X十—=12
3
4
6 26 13
2 1
(87) —
6 51
X—
(88) X十=—- =
35 45 25 1 (89) X-0.25=-
4
1
(90)
X
=30%
(91) 4+0.7X=102
(92) — X+—X=42
2
(93) X+ —X=105
1
/
、(94) 4 3
X-—X=400
8
(95) X-0.125X=8
3 2
36
3
96) = -
X 4
2 / 2
4
3
(97) X+刁7
X=18
(
1 3 13
(98) XX( + )=
6 8 12
(99) X — 0.375X=
5 6
(100) XX — + —=4X—
3 2
8
2 1 3
3 / 2