tính hợp lí
a)\(F=\left(9,75.21\frac{3}{7}+\frac{39}{4}.18\frac{4}{7}\right).\frac{15}{78}\)
b)\(H=\left(9\frac{30303}{80808}+7\frac{303030}{484848}\right)+4,03\)
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LL
1
31 tháng 1 2022
\(H=\left(9+\dfrac{3}{8}+7+\dfrac{5}{8}\right)+4.03=17+4.03=21.03\)
UN
11 tháng 4 2016
\(H=\left(9\frac{30303}{80808}+7\frac{303030}{484848}\right)+4.03\)
\(H=\left(\frac{75}{8}+\frac{61}{8}\right)+\frac{403}{100}\)
\(H=17+\frac{403}{100}\)
\(H=\frac{2103}{100}\)
\(I=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)
\(I=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{111111}\right)\)
\(I=10101.\left(\frac{5}{111111}-\frac{4}{111111}+\frac{5}{222222}\right)\)
\(I=10101.\left(\frac{1}{111111}+\frac{5}{222222}\right)\)
\(I=10101.\frac{7}{222222}\)
\(I=\frac{7}{22}\)
NT
1
PT
0
5 tháng 5 2015
I=10101(5/111111+5/222222+4/3.7.11.13.37)
I=10101(5/111111+5/222222+4/111111)
I=10101(10/222222+5/222222+8/222222)
I=10101.23/222222
I=232323/222222
LL
1
31 tháng 1 2022
\(A=9.75\left(21+\dfrac{3}{7}+18+\dfrac{4}{7}\right)\cdot\dfrac{15}{78}=9.75\cdot40\cdot\dfrac{15}{78}=75\)
NB
1
2 tháng 6 2015
\(C=9\frac{30303}{80808}+4,03+7\frac{303030}{484848}\)
\(=9\frac{3}{8}+4\frac{3}{100}+7\frac{5}{8}\)
\(=\left(9+7\right)+\left(\frac{3}{8}+\frac{5}{8}\right)+4\frac{3}{100}\)
\(=16+1+4\frac{3}{100}\)
\(=21\frac{3}{100}\)
17 tháng 5 2016
\(A=\left(9+\frac{30303}{80808}+7+\frac{303030}{484848}\right)+4,03\)
\(A=\left(9+\frac{3\times10101}{8\times10101}+7+\frac{30\times10101}{48\times10101}\right)+4,03\)
\(A=\left(9+\frac{3}{8}+7+\frac{5}{8}\right)+4,03\)
\(A=\left(9+7+\frac{3}{8}+\frac{5}{8}\right)+4,03\)
\(A=\left(16+1\right)+4,03\)
\(A=17+4,03=21,03\)
\(F=\left(9,75.21\frac{3}{7}+\frac{39}{4}.18\frac{4}{7}\right).\frac{15}{78}=\left(\frac{39}{4}.21\frac{3}{7}+\frac{39}{4}.18\frac{4}{7}\right).\frac{15}{78}=\left(\frac{39}{4}\left(21\frac{3}{7}+18\frac{4}{7}\right)\right).\frac{15}{78}=\left(\frac{39}{4}.40\right).\frac{15}{78}=390.\frac{15}{78}=75\)\(H=\left(9\frac{30303}{80808}+7\frac{303030}{484848}\right)+4,03=\left(9\frac{3}{8}+7\frac{30}{48}\right)+4,03=17+4,03=21,03\)