解方程
2x-0.8×15=3.8
x=
[ ]
|
A.12 |
B.48.6 |
|
C.7.9 |
D.2.7 |
解方程
6(x-3.2)=45
x=
[ ]
|
A.1.6 |
B.10.7 |
|
C.0.36 |
D.3.4 |
解方程
27.5-8x=0.3
x=
[ ]
|
A.1.6 |
B.10.7 |
|
C.0.36 |
D.3.4 |
解方程
20.9+2.4x=24.74
x=
[ ]
|
A.1.6 |
B.10.7 |
|
C.0.36 |
D.3.4 |
解方程
5x+3.4=5.2
x=
[ ]
|
A.1.6 |
B.10.7 |
|
C.0.36 |
D.3.4 |
解方程
9x=40.5
x=
[ ]
|
A.8.5 |
B.16.2 |
|
C.4.5 |
D.11.15 |
解方程
x÷1.7=5
x=
[ ]
|
A.8.5 |
B.16.2 |
|
C.4.5 |
D.11.15 |
解方程
x-3.25=7.9
x=
[ ]
|
A.8.5 |
B.16.2 |
|
C.4.5 |
D.11.15 |
解方程
x+15.7=31.91
x=
[ ]
|
A.8.5 |
B.16.2 |
|
C.4.5 |
D.11.15 |
3.52-1.84-1.16=
[ ]
|
A.0.52 |
B.1 |
|
C.100 |
D.0.4 |