100000000 : x =123000
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400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
\(100000000\times2899+1111111-13465+55555\times345\)
\(=289900000000+1097646+19166475\)
\(=289901097646+19166475\)
\(=289920264121.\)
kết quả của phép tính là
123000:100=1230
1657x34=56338
Câu này con thấy đc
1+1+2+2+3+3+....+100000000+100000000=2(1+2+3+...+100000000)=2x100000000x100000001:2=100000000x100000001
100000000 : x = 123000
x = 100000000 : 123000
x = \(\frac{100000}{123}\)
100000000 : x =123000
x=100000000 : 123000
x=813.00813