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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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