\(A=\frac{-3}{5}+\left(\frac{-2}{5}+2\right)\)
\(A=\frac{-3}{5}+\frac{8}{5}\)
\(A=1\)
\(B=\frac{3}{7}+\left(\frac{-1}{5}+\frac{-3}{7}\right)\)
\(B=\frac{3}{7}+\frac{-1}{5}+\frac{-3}{7}\)
\(B=\left(\frac{3}{7}+\frac{-3}{7}\right)+\frac{-1}{5}\)
\(B=0+\frac{-1}{5}\)
\(B=\frac{-1}{5}\)
\(C=\frac{-7}{9}.\frac{4}{11}+\frac{-7}{9}.\frac{7}{11}+\frac{52}{9}\)
\(C=\frac{-7}{9}.\left(\frac{4}{11}+\frac{7}{11}\right)+\frac{52}{9}\)
\(C=\frac{-7}{9}.1+\frac{52}{9}\)
\(C=\frac{-7}{9}+\frac{52}{9}\)
\(C=5\)
\(D=50\%.\frac{4}{3}.10.\frac{7}{35}.0,75\)
\(D=\frac{50}{100}.\frac{4}{3}.10.\frac{7}{35}.\frac{75}{100}\)
\(D=\frac{1}{2}.\frac{4}{3}.10.\frac{1}{5}.\frac{3}{4}\)
\(D=\left(\frac{1}{2}.\frac{1}{5}.10\right).\left(\frac{4}{3}.\frac{3}{4}\right)\)
\(D=1.1\)
\(D=1\)
A= 1
B= -1/5
C=5
D=1
mik có ý kiến lần sau bạn đặt câu hỏi nhớ ghi phân số trên dưới cho dễ nhìn nha
