equality
FA Thần Tốc Độ
08/02/2018 at 21:46
Summer Clouds moderators
16/07/2017 at 12:10
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Convert \(\dfrac{a}{b}=\dfrac{a}{d}\) to \(\dfrac{a}{b}=\dfrac{c}{d}\)
We have :
\(\dfrac{a}{b}=\dfrac{c}{d}\Leftrightarrow\dfrac{2a}{2b}=\dfrac{3c}{3d}\)
Apply the same sequence properties , we got :
\(\dfrac{2a}{2b}=\dfrac{3c}{3d}=\dfrac{2a-3c}{2b-3d}=\dfrac{2a+3c}{2b+3d}\)
\(\Rightarrow\dfrac{2a-3c}{2b-3d}=\dfrac{2a+3c}{2b+3d}\)
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Trần Nhật Dương 16/07/2017 at 17:16
Convert a/b=a/d to a/b=c/d
We have :
a/b=c/d⇔2a/2b=3c/3d
Apply the same sequence properties , we got :
2a/2b=3c/3d=2a−3c/2b−3d=2a+3c/2b+3d
⇒2a−3c/2b−3d = 2a + 3c/2b + 3d
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v 16/07/2017 at 12:35
\(\dfrac{a}{b}=\dfrac{c}{d}\Rightarrow\dfrac{2a}{2b}=\dfrac{3c}{3d}=\dfrac{2a+3c}{2b+3d}=\dfrac{2a-3c}{2b-3d}\)
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