x
的8倍减去52等于34,x等于[
]|
A .3.9 |
B .10.75 |
|
C .2.8 |
D .13.125 |
解方程
6x
+5.4×9=64.8x=
[ ]
|
A .12 |
B .48.6 |
|
C .7.9 |
D .2.7 |
解方程
2x
-0.8×15=3.8x=
[ ]
|
A .12 |
B .48.6 |
|
C .7.9 |
D .2.7 |
解方程
6(x
-3.2)=45x=
[ ]
|
A .1.6 |
B .10.7 |
|
C .0.36 |
D .3.4 |
解方程
27.5
-8x=0.3x=
[ ]
|
A .1.6 |
B .10.7 |
|
C .0.36 |
D .3.4 |
解方程
20.9
+2.4x=24.74x=
[ ]
|
A .1.6 |
B .10.7 |
|
C .0.36 |
D .3.4 |
解方程
5x
+3.4=5.2x=
[ ]
|
A .1.6 |
B .10.7 |
|
C .0.36 |
D .3.4 |
解方程
9x
=40.5x=
[ ]
|
A .8.5 |
B .16.2 |
|
C .4.5 |
D .11.15 |
解方程
x
÷1.7=5x=
[ ]
|
A .8.5 |
B .16.2 |
|
C .4.5 |
D .11.15 |
解方程
x
-3.25=7.9x=
[ ]
|
A .8.5 |
B .16.2 |
|
C .4.5 |
D .11.15 |