300道解方程题.doc+x)+x= ÷ 2
3x+9=27
5(x+5)=100
2(X+X+=
18(x-2)=270
x+3x=70
25000+x=6x 12x=300-4x 3(x+3)=50
8
4X+10=5
320=45+6X +2x=6
=8 420-3x=170
x+= 3(x+5)=18
52-2x=15 +9=40
13÷x =
6x+3x=36
X+= +6=3x
15x =30 5×3-x=8
3x+9=36 40-8x=5
7(x-2)=7 x÷5=21
3x+9=12 48-20+5x=31
18(x-2)=27 x+2x+8=80
12x=320+4x 200-x÷5=30
+x=
70÷ x =4
15÷3x=5 3x =
30÷x=85 =
5(x+5)=100
8x-15×6=3x-20
8x+9=17
x+3x=70
( 2x+7)× 2=4x+14
9+6x=14
3(x+3)=50
3x+9=27
x+9x=4+7
4(4x-1) =3( 22-x)
7x+=
2x+9=17
7(2x-6)=84
x+=
6x-7=12
5(x-8)=3x
=
7x-9=8
7x-7=6x+4
3x-8=30
x-56=1
22-x+2=68x
6x+6=12
=
8x-6x+30=12x+15
3x-3=1
3200=450+5x+x
7(x+2)=5x+60
5x-3x=4
=6
240÷( x- 7)=30
2x+16=19
12x-8x=
( 20-8x)÷ 3=2x+1
5x+8=19
=
( 6x-40)÷ 8=5x-8
15+6x=27
x-30=12
12÷ 8x=3
7x+8=15
6x-21=21
( 21+4x)× 2=10x+14
4+5x=9
6x-3=6
9x=18 48-27+5x=31 ×3=
4x-18=13 +x+21=56 +8=43
5x+9=11 (x+6)=× 6x-3x=18
x+= 3200=450+5x+x =
15x =3 =6 x÷=90
3x-8=16 12x-8x= 9x-40=5
3x÷5=
× 2x=15
x÷5+9=21
x+2x+18=78 x+= 48-27+5x=31
+8=43 = +x+21=56
6x-3x=18 x+= x+2x+18=78
= 15x =3 x+=
x÷=90 3x-8=16 =
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