\(\frac{a}{b}=\frac{c}{d}\)
\(\Rightarrow\frac{a}{c}=\frac{b}{d}\)
\(\Rightarrow\frac{2a}{2c}=\frac{3b}{3d}=\frac{2a+3b}{2c+3d}=\frac{2a-3b}{2c-3d}\)
\(\Rightarrow\frac{2a-3b}{2a+3b}=\frac{2c-3d}{2c+3d}\)
Cho tỉ lệ thức : \(\frac{a}{b}=\frac{c}{d}\) . Chứng minh
\(\frac{2a+3b}{2a-3b}=\frac{2c+3d}{2c-3d}\)
Cho :\(\frac{2a+3b}{2a-3b}=\frac{2c+3d}{2c-3d}\)
Chứng Minh Rằng:\(\frac{a}{b}=\frac{c}{d}\)
Chứng minh:\(\frac{5a+3b}{5c+3d}=\frac{2a-3b}{2c-3d}\) Cho a/b=c/d.
cho \(\frac{a}{b}\)=\(\frac{c}{d}\)
Chứng minh: a) \(\frac{2a+b}{b}\)=\(\frac{2c+d}{d}\)
b) \(\frac{2a-3b}{2a+3b}\)=\(\frac{2c-3d}{2c+3d}\)
Chứng minh rằng nếu \(\frac{a}{b}=\frac{c}{d}\) thì \(\frac{2a-3b}{2a+3b}=\frac{2c-3d}{2c+3d}\)
Cho \(\frac{a}{b}=\frac{c}{d}\), chứng minh:
\(\frac{2a+3b}{2a-3b}=\frac{2c+3d}{2c-3d}\)
cho tỉ lệ thức\(\frac{a}{b}=\frac{c}{d}\).chứng minh
a) \(\frac{3a+5b}{3a-5b}=\frac{3c+5b}{3c-5b}\)
b)\(\frac{2a+3b}{2a-3b}=\frac{2c+3d}{2c-3d}\)
Cho: \(\frac{2a+3b}{2a-3b}\)= \(\frac{2c+3d}{2c-3d}\)
Chứng Minh Rằng:\(\frac{a}{b}=\frac{c}{d}\)
cho tỉ lệ thức \(\frac{a}{b}=\frac{c}{d}\).chứng minh
a)\(\frac{3a+5b}{3a-5b}=\frac{3c+5d}{3c-5d}\)
b) \(\frac{2a+3b}{2a-3b}\)=\(\frac{2c+3d}{2c-3d}\)
