四年级下册数学解方程计算题

x－0.9=24.7        x×33=99        2x＋5.67=12.67

7b=1.4 　　　　　　x÷4.6=8.8         2y－6=34.8

5a÷5.5=10.5           2x=100　　　　１.8-X=0.88

x＋30＝60        145－x＝105            80＋x＝100

10-3x=4                                        3x-5+2x+4=14

45-6x+9x=15                                     7x+18-6x+12=60

39-5x=9                                           2x+3+16x-7=32

33-8x+7-7x=10                                     9x-7-6x+5=10

3x+5=6x-10                                       5x-8=16-3x

20-4x=x+5                                       16-2x=46-8x

7x+9=9x-17                                       10x-6=54-5x

25-3x=4x-3                                      50+3x=70-7x

有括号的先打开括号（原则：乘法对加减法的分配律）。 2×(4x+3)=x+1 5-3×(2x-3)=2

2x-3(4x-9)=x-6 括号前面的乘号可以省略 2x-3×(4x-9)=x-6 2(2x+7)=5-4(x-1)+21

2(3x-5)=13+5(5-2x) 48-(x+8)=3(x-4)

5(6-2x)+4=34+4(7-3x) 2x-3(4x-9)=2+5(1-x)

17-5x=7 2 、6x+7-4x=19