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\(\frac{4}{6}\)+ y =\(\frac{7}{5}\)
y = \(\frac{7}{5}\)- \(\frac{2}{3}\)
y = \(\frac{21}{15}\)-\(\frac{10}{15}\)
y = \(\frac{11}{15}\)
k cho mk nha
\(\frac{125}{61}-\frac{22}{39}+\frac{100}{39}-\frac{3}{61}=\left(\frac{125}{61}-\frac{3}{61}\right)+\left(\frac{100}{39}-\frac{22}{39}\right)\)
\(=\frac{122}{61}+\frac{78}{39}=2+2=4\)
\(\frac{82}{59}+\frac{95}{91}+\frac{36}{59}+\frac{87}{91}=\left(\frac{82}{59}+\frac{36}{59}\right)+\left(\frac{95}{91}+\frac{87}{91}\right)\)
\(=\frac{118}{59}+\frac{182}{91}=2+2=4\)
\(\frac{82}{59}+\frac{95}{91}+\frac{36}{59}+\frac{87}{91}\) \(=\left(\frac{82}{59}+\frac{36}{59}\right)+\left(\frac{95}{91}+\frac{87}{91}\right)=\frac{118}{59}+\frac{182}{92}=2+2=4\)
Bài làm :
\(\frac{9}{10}\times y=\frac{2}{3}\)
\(y=\frac{2}{3}:\frac{9}{10}\)
\(y=\frac{20}{27}\)
Vậy \(x=\frac{20}{27}\) .
Học tốt nhé
\(\frac{9}{10}\times y=\frac{2}{3}\)
\(y=\frac{2}{3}\div\frac{9}{10}\)
\(y=\frac{20}{27}.\)
\(\frac{137}{91}-\frac{46}{71}+\frac{117}{71}-\frac{46}{91}\)
\(=\left(\frac{137}{91}-\frac{46}{91}\right)-\left(\frac{46}{71}-\frac{117}{71}\right)\)
\(=\frac{91}{91}-\frac{-71}{71}\)
\(=1-\left(-1\right)=2\)
\(\frac{112}{39}-\frac{18}{61}+\frac{79}{61}-\frac{34}{39}\)
\(=\left(\frac{112}{39}-\frac{34}{39}\right)+\left(\frac{79}{61}-\frac{18}{61}\right)\)
\(=\frac{78}{39}+\frac{61}{61}\)
\(=2+1\)
\(=3\)
thì phần nào chẳng tô màu đỏ?