Question

Tính nhanh giá trị biểu thức M:

M=\(\frac{\frac{3}{5}+\frac{3}{7}-\frac{3}{11}}{\frac{4}{5}+\frac{4}{7}-\frac{4}{11}}\)

Các bạn trình bày rõ ràng hộ mình nha!

Thanks các bạn rất nhìu !!!

 

Answer 1

Ta có \(M=\frac{\frac{3}{5}+\frac{3}{7}-\frac{3}{11}}{\frac{4}{5}+\frac{4}{7}-\frac{4}{11}}=\frac{3\left(\frac{1}{5}+\frac{1}{7}-\frac{1}{11}\right)}{4\left(\frac{1}{5}+\frac{1}{7}-\frac{1}{11}\right)}=\frac{3}{4}\)

Answer 2

tử=3(1/5+1/7-1/11)

mẫu=4(1/5+1/7-1/11)

M=3/4

Answer 3

\(M=\frac{\frac{3}{5}+\frac{3}{7}-\frac{3}{11}}{\frac{4}{5}+\frac{4}{7}-\frac{4}{11}}\)

\(\Rightarrow M=\frac{3\times\left(\frac{1}{5}+\frac{1}{7}+\frac{1}{11}\right)}{4\times\left(\frac{1}{5}+\frac{1}{7}-\frac{1}{11}\right)}\)

\(\Rightarrow M=\frac{3}{4}\)

Answer 4

Trả lời:

\(M=\frac{\frac{3}{5}+\frac{3}{7}-\frac{3}{11}}{\frac{4}{5}+\frac{4}{7}-\frac{4}{11}}\)

\(=\frac{3.\left(\frac{1}{5}+\frac{1}{7}-\frac{1}{11}\right)}{4.\left(\frac{1}{5}+\frac{1}{7}-\frac{1}{11}\right)}\)

\(=\frac{3}{4}\)

Answer 5

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