Toán Lớp 5: x + $\dfrac{1}{5}$ = $\dfrac{3}{7}$
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Toán Lớp 5: x + $\dfrac{1}{5}$ = $\dfrac{3}{7}$
Comments ( 2 )
=>x=3/7-1/5
=>x=15/35-7/35
=>x=8/35
Vậy x=8/35