\(A=12+\frac{3}{5}+\frac{17}{24}+\frac{7}{5}\)
\(A=12+\left(\frac{3}{5}+\frac{7}{5}\right)+\frac{17}{24}\)
\(=12+2+\frac{17}{24}\)
\(=14+\frac{17}{24}\)
\(=\frac{336}{24}+\frac{17}{24}\)
=\(=\frac{353}{24}\)
Trả lời
A=12+3/5+17/24+7/5
=12+(3/5+7/5)+17/24
=12+10/5+17/24
=12+2+17/24
=14/1+17/24
=336/24+17/24
=353/24
B=2/3+1/5-5/3+3/5+1
=10+2-10+6+15/15
=23/15.
Học tốt nha !
\(B=\frac{2}{3}+\frac{1}{5}-\frac{5}{3}+\frac{3}{5}+1\)
\(=\left(\frac{2}{3}-\frac{5}{3}\right)+\left(\frac{1}{5}+\frac{3}{5}\right)+1\)
\(=-1+\frac{4}{5}+1\)
\(=\frac{4}{5}\)
\(A=12+\frac{3}{5}+\frac{17}{24}+\frac{7}{5}\)
\(A=12+\left(\frac{3}{5}+\frac{7}{5}\right)+\frac{17}{24}\)
\(=12+2+\frac{17}{24}\)
\(=\frac{336}{24}+\frac{17}{24}\)
\(=\frac{353}{24}\)
\(B=\frac{2}{3}+\frac{1}{5}-\frac{5}{3}+\frac{3}{5}+1\)
\(=\left(\frac{2}{3}-\frac{5}{3}\right)+\left(\frac{1}{5}+\frac{3}{5}\right)+1\)
\(=-1+\frac{4}{5}+1\)
\(=\frac{4}{5}\)
\(B=\frac{2}{3}+\frac{1}{5}-\frac{5}{3}+\frac{3}{5}+1\)
\(B=\left(\frac{2}{3}+\frac{5}{3}\right)-\left(\frac{1}{5}+\frac{3}{5}\right)+1\)
\(B=\frac{7}{3}-\frac{4}{5}+1\)
\(B=\frac{38}{15}\)
