100道五年级数学解方程.doc

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1
3x+7=2x+12
3x-6=x+6
5(xX3)=30
2
x+52=63
2: .
1
3x+7=2x+12
3x-6=x+6
5(xX3)=30
2
x+52=63
21x=147
4(5x+6)=144
3
2x+28X8=242
(7x-8)X5=170
2(x-12)=32
4
7x+3x=40
x+9=40
9(6x+3)=81
5
7x+3x=40
7x+3x=40
4x+5=160
6
9x+27X6=171
(9x-3)X5=390
8x+x+5=41
7
18x-14x=12
7(X-2)=2X+3
3200=450+5X+X
8
X+9=27
18(X-2)=270
12X=300-4X
9
X+12=72
3X+9=81
2X+9=6
10
18(X-2)=270
410-3X=170
+18=3X
11
5X3-X+2=8
9X-40=5
X5+9=21
12
48-27+5X=31
X+2X+18=78
(200-X)+5=30
13
(X-140)+70=4
3X+5X=48
14X-8X=12
14
20X-50=50
42X+28X=140
80+5X=100
15
79X+X=80
45X-50=40
x+x+5=41
16
15+X=5
12+X=4
125+X=25
17
15+3X=5
210+3X=5
110+2X=5
18
x+5=21
200-x+5=30
200-30+x=230
19
x+2x+8=80
48-20+5x=31
40-8x=5
20
5X3-x=8
70+x=5
3(x+3)=50
21
5(x+5)=100
x+3x=70
(4x—1)=3(22-x)
1
(2x-6)=84
(x-8)=3x
7x-7=6x+4
2
(x+2)=5x+60
240+(x-8)=30
(2