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`10101(5/111111+5/222222+4/111111)`
`=10101(10/222222+5/222222+8/222222)`
`=10101xx23/222222`
`=23/22`
|(5/8-5/14)+(3/8-9/14)|:4/7
=|(5/8+3/8)+(-5/14-9/14)|:4/7
=|1+(-1)|:4/7
=0
\(I=10101\cdot\left(\dfrac{5}{111111}+\dfrac{5}{222222}-\dfrac{4}{3\cdot7\cdot11\cdot13\cdot37}\right)\)
\(=10101\cdot\left(\dfrac{5}{111111}+\dfrac{5}{222222}-\dfrac{4}{111111}\right)\)
\(=10101\cdot\dfrac{1}{31746}\)
\(=7\cdot\dfrac{1}{22}\)
\(=\dfrac{7}{22}\)
\(I=10101.\left(\dfrac{5}{111111}+\dfrac{5}{222222}-\dfrac{4}{3.7.11.13.37}\right)\)
\(I=10101.\left(\dfrac{5}{111111}+\dfrac{1}{2}.\dfrac{5}{111111}-\dfrac{5}{111111}.\dfrac{4}{5}\right)\)
\(I=10101.\dfrac{5}{111111}.\left(1+\dfrac{1}{2}-\dfrac{4}{5}\right)\)
\(I=\dfrac{5}{11}.\dfrac{7}{10}=\dfrac{7}{22}\)
Chúc bạn học tốt!!!
\(C=10101.\left(\frac{5}{111111}+\frac{5}{222222}+\frac{4}{3.7.11.13.37}\right)\)
\(C=10101.\frac{23}{222222}\)
\(C=\frac{23}{22}.\)
Đề của bn sai rùi, phải là A = 10101 x ... chứ
\(A=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)
\(A=10101.\left(\frac{5}{10101.11}+\frac{5}{10101.22}-\frac{4}{10101.11}\right)\)
\(A=10101.\frac{1}{10101}.\left(\frac{5}{11}+\frac{5}{22}-\frac{4}{11}\right)\)
\(A=\frac{10}{22}+\frac{5}{22}-\frac{8}{22}\)
\(A=\frac{15}{22}-\frac{8}{22}\)
\(A=\frac{7}{22}\)
Ủng hộ mk nha ^_-