第116页

信息发布者：
B
C
C
9000
4.9
8
$​\frac {1}{20}​$
$​\frac {3}{4}​$
$​\frac {5}{8}​$
$​\frac {11}{6}​$
​$1 \frac 19$​
=0.8×1.25×31
=1×31
=31
​$= \frac {17}{18}×(\frac 9{10}+\frac 1{10})$​
​$= \frac {17}{18}×1$​
​$= \frac {17}{18}$​
$\begin {aligned}解：7x&=108-3\\7x&=105\\x &=15\end {aligned}$
$\begin {aligned}解： \frac {3}{5}x&=\frac {7}{12}×\frac {9}{10}\\\frac {3}{5}x&=\frac {21}{40}\\x &=\frac {7}{8}\end {aligned}$
=60-43
=17
=28.35+5.8
=34.15
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