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nhokkin97
2 năm trước
a)(x- $\frac{12}{7}$): $\frac{6}{5}$ = $\frac{4}{7}$ b) $\frac{0,13}{x}$ = $\frac{9}{42}$ c) $\frac{5}{x-2}$= $\frac{15}{6}$
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