五年级下册解方程练习题80747
个性签名失恋-关于珍惜时间的格言
5X-3X=68
4X+10=5
=8
52
-
2x
=
15
X+=
3x+9
=
36
3x+9=12
12x=320+4x
320=45+6X
x+=
15x
=
30
7(x-2)=7
18(x-2)=27
+x= 15
-
3x=5
x=85
+2x=6
3(x+5)=18
+9=40
+6=3x
5 X 3-x=8
x
-
5=21
48-20+5x=31
200-x
-
5=30
30
+
420-3x=170
6x+3x=36
40-8x=5
x+2x+8=80
70
+
x =4 3x =
5(x+5)=100
3(x+3)=50
x+3x=70