Tìm x:
a) 1996 + x= 2002
b) \(x\times 3 = 9861\)
c) x : 4 = 250
\(\eqalign{ a) \ 1996 + &x = 2002 \cr &x = 2002 - 1996 \cr & x = 6 \cr} \) \(\\\eqalign{ b) \ x \times& 3 = 9891 \cr &x = 9891:3 \cr & x = 3287 \cr} \) \(\\\eqalign{ c) \ x:&4 = 250 \cr &x = 250 \times 4 \cr & x = 1000 \cr} \)
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