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1.02
176
2
80
8
5
$4\frac 1{16}$
$\frac{9}{16}$
6.4
0.7
$\frac {1}{2}$
$\frac {2}{13}$
$\begin{aligned}解:\frac {1}{4}x&=0.36×0.75\\\frac {1}{4}x&=0.27\\x&=0.27÷0.25\\x&=1.08\end{aligned}$
$\begin{aligned}解:\frac {1}{6}x&=\frac {4}{9}×15\\\frac {1}{6}x&=\frac {20}{3}\\x&=40\end{aligned}$
$\begin{aligned}解:5x&=180-3×45\\5x&=180-135\\5x&=45\\x&=9\end{aligned}$
$\begin{aligned}解:\frac {1}{4}x&=\frac {2}{3}-\frac {5}{9}\\\frac {1}{4}x&=\frac {1}{9}\\x&=\frac {4}{9}\end{aligned}$
$\begin{aligned}解:2x-2&=18×7\\2x-2&=126\\2x&=128\\x&=64\end{aligned}$
$\begin{aligned}解:0.65x&=0.52\\x&=0.8\end{aligned}$
$=(21.7+7.3)-(\frac {3}{7}+\frac {11}{7})$
$=29-2$
$=27$
=3×(150-102)
=3×48
=144
$=\frac {5}{4}×(\frac {15}{17}-\frac {7}{17})$
$=\frac {5}{4}×\frac {8}{17}$
$=\frac {10}{17}$
$=\frac {7}{12}÷(\frac {1}{2}×14)$
$=\frac {7}{12}÷7$
$=\frac {1}{12}$
$=4+\frac {26}{37}+\frac {11}{37}$
$=4+1$
$=5$
=0.25×0.8×8×1.25
=0.2×10
=2
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