上海沪教版小升初解方程专题训练

(60-X+55)乞=35 解方程专题训练

7 x+6=8x

2.4x-5.2-x=0.82 18-2x=3x+

3.5 (x-2.8-7.2) 6=259x-8= x

(7x-3x- 2.8) 3=2.4 12x+12=16x 20-4x+6x=40 2.1x-3.5=1.4x 5.6 5-3x=5x 14-2x=3x+2.5

4( 0.9-X )= 2.2 1.8(4.7 ＋ x)=19.8 (x + 1.8) - 8=6.6 3 X 1.8 - 0.6X = 5.1 2.4x+0.6=5.4 1.2(x-1.2)=1.44

x - 2.5+0.7=1.8 7.8-3x=0.6

x+1.2=6.1 21.4 宁

x=0.4 0.6x=0.72 35.2-x=18.6

x+0.72-3.6=2.5 x-2.仁3.5<

0.4

x- 2.8=6.5 k 0.3=2.7

7.6x 十 4=0.38

13.2-x=2.2> 0.6 7 (x+3.2)吃=28 3.6x-x-0.1x=0.753x —

2.5 >3=21.3 2x ＋8x — 2.8x=

3.6 16

－x=4x ＋1.5

8 (2x — 1)吃=30.4

3.74 —

2.5x=0.24

25 + 3x —

22=8x

64x + 52(5 —

x)=296

6.4x —

1.2=4x+

2.4

(2) 1.2(0.7 x) 4.8 2 3x 2.16 4.2x

0.5 (x-3 ) =31.5

(7x + 8)十5=24 25 - X- 2=12- 24

5x 35 10x 35 3.6 0.2(x 2) 3

2 30 2(18 x) 6x 48x 12(30 x) 0 30 5(x 1) 20 22(1 2x) 50(2 x) 5(2 x) 1 3(1 x)

3 1.2(2 x) 5(0.2 1)

14 3(1 x) 2 5 60 4(1 x) 2x 80