Toán Lớp 7: Tìm x:
$\frac{2}{5}$x + $\frac{1}{3}$ = $\frac{5}{2}$
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Toán Lớp 7: Tìm x:
$\frac{2}{5}$x + $\frac{1}{3}$ = $\frac{5}{2}$
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