第99页

信息发布者:
③④⑤⑦
③④⑤
=



=

175
34
$3800+0.5m$
6300
​$ B$​
​$ A$​
​$ B$​
解:
$\begin{aligned}1.6x - x &= 9.6\\0.6x &= 9.6\\x &= 16\end{aligned}$
解:
$\begin{aligned}1.2x - 2\times0.8 &= 8\\1.2x - 1.6 &= 8\\1.2x &= 9.6\\x &= 8\end{aligned}$
解:
$\begin{aligned}6(x - 3.5) &= 30\\x - 3.5 &= 5\\x &= 8.5\end{aligned}$
解:
$\begin{aligned}2x - 3.2 + 6.8 &= 20\\2x + 3.6 &= 20\\2x &= 16.4\\x &= 8.2\end{aligned}$