第98页

信息发布者：
B
B
C
B
0.04
11.1
2
0.41
2.85
3
4
1.05
=3.54
=0.378
≈2.66
≈1.07

=0.11×(1.8+8.2)
=0.11×10
=1.1
=0.4×25×0.8×12.5
=10×10
=100
=3-5.4×0.5
=3-2.7
=0.3
=4.27+6.8-3.12
=11.07-3.12
=7.95
$\begin {aligned}解： 5x+2.7&=5.7\\5x&=3\\x &=0.6\end {aligned}$
$\begin {aligned}解：2.5x&=3.25\\x &=1.3\end {aligned}$
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