\(\Rightarrow x\times\left(\dfrac{9}{5}+\dfrac{6}{5}\right)=\dfrac{3}{4}\\ \Rightarrow x\times3=\dfrac{3}{4}\\ \Rightarrow x=\dfrac{3}{4}:3\\ \Rightarrow x=\dfrac{3}{4}\times\dfrac{1}{3}=\dfrac{1}{4}\)
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\(\dfrac{9}{5}\times x+\dfrac{6}{5}\times x=\dfrac{3}{4}\)
\(x\times\left(\dfrac{9}{5}+\dfrac{6}{5}\right)=\dfrac{3}{4}\)
\(x\times3=\dfrac{3}{4}\)
\(x=\dfrac{3}{4}:3=\dfrac{3}{4}\times\dfrac{1}{3}\)
\(x=4\)
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\(\dfrac{9}{5}.x+\dfrac{6}{5}.x=\dfrac{3}{4}\)
\(\left(\dfrac{9}{5}+\dfrac{6}{5}\right).x=\dfrac{3}{4}\)
\(3.x=\dfrac{3}{4}\)
\(x=\dfrac{3}{4}:3\)
\(x=\dfrac{3}{4}.\dfrac{1}{3}\)
\(x=\dfrac{1}{4}\)
Lưu ý : dấu . là dấu nhân
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