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9999999999 - 5555555555 = 4444444444 .
Chúc bạn học tốt !
\(\left(\frac{1111111111}{2222222222}+\frac{9999999999}{2222222222}+\frac{5555555555}{2222222222}+\frac{5555555555}{2222222222}\right)\) \(+\) \(90\)
\(=\) \(10+90\)
\(=\) \(100\)
1111111111111111111/22222222222222222222222222222+ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg
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( y+1)+(y+2)+...+(y+37) = 999
(y+y+y+...+y+y) + (1+2+3+4+..+37) = 999
y. 37 + (1+(2+37)+(3+36)+...) = 999
y.37 + (1+ 39 + 39 + 39+ ...) = 999
y.37 + (1 + 39 . 18) = 999
y . 37 + (1+702) =999
y.37+ 703 = 999
y.37 = 999-703
y.37= 296
y= 296 : 37
y = 8
Vật y = 8
999 + 999 + 999 x (1 + 1 )
= 999 x 3 x( 1 + 1 )
= 2997 x 2
= 5994
=9999999000kmiknha
y+999=9999999999
y=999999999-999
y=9999999000