Bài 2: Trang 16 VBT toán 5 tập 1
Tìm $x$:
a) $x$ + $\frac{3}{5}$ = $\frac{7}{2}$ b) $x$ - $\frac{1}{4}$ = $\frac{1}{5}$ c) 2 - $x$ = $\frac{4}{7}$
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