1-31
2. Tinh
(2)32
3-2
2)
b 21:4:( -8)
2 7
1-31 2. Tinh (2)32 3-2 2) b 21:4:( -8) 2 7
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1-31
2. Tinh
(2)32
3-2
2)
b 21:4:( -8)
2 7
Delwyn
[(2/3)².2/3].(3-2/9)
=(2/3)³.25/9
=tỰ TÍNH NHA
Huy Gia
a, (2/3)².3-2/9 ÷2/9
=4/6.3-1
=2-1
=1
b, 2 . 1/2 ÷ 4/7 ÷(-8/7)
=1 ÷ 4/7÷(-8/7)
=7/4÷(-8/7)
=-49/32
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