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TL
\(1\frac{23}{24}\)=\(\frac{1x24+23}{24}\)=\(\frac{47}{24}\) chú ý \(x\)là nhân nha
nha bn
HT
\(\frac{\left(1\cdot15\cdot23\cdot4\right)+\left(1\cdot10\cdot23\cdot4\right)+\left(3\cdot10\cdot15\cdot4\right)-\left(23\cdot10\cdot15\cdot23\right)}{10\cdot15\cdot23\cdot4}\)
=\(\frac{1380+920+1800-79350}{13800}\)
=\(\frac{-75250}{13800}\)
=\(-\frac{1505}{276}\)
\(23:24=0,95\)
\(461:45=10,24\)
\(24:7,35=3,26\)
\(32:45,6=0,70\)
\(a,97\times327+327\times3\)
\(=327\times\left(97+3\right)\)
\(=327\times100\)
\(=32700\)
\(b,\frac{1}{7}\times\frac{4}{23}+\frac{1}{7}\times\frac{25}{23}+\frac{1}{7}\times\frac{17}{23}+5\times\frac{1}{7}\)
\(=\frac{1}{7}\times\left(\frac{4}{23}+\frac{25}{23}+\frac{17}{23}+5\right)\)
\(=\frac{1}{7}\times7\)
\(=1\)
a) 97 x 327 + 327 x 3
= (97 + 3) x 327
= 100 x 327 = 32700
b) \(\frac{1}{7}\times\frac{4}{23}+\frac{1}{7}\times\frac{25}{23}+\frac{1}{7}\times\frac{17}{23}+5\times\frac{1}{7}\)
\(=\frac{1}{7}\times\left(\frac{4}{23}+\frac{25}{23}+\frac{17}{23}+5\right)\)
\(=\frac{1}{7}\times7=\frac{7}{7}=1\)
\(\frac{24.27-23}{24+47.23}=\frac{648-23}{24+1081}=\frac{625}{1105}=\frac{125}{221}\)
_Học_tốt_
=^.^=
\(\frac{24.27-23}{24+47.23}\\ =\frac{\left(23+1\right).27-23}{23+1+47.23}\\ =\frac{23.27+27-23}{23.\left(47+1\right)+1}\\ \)