\(a,\dfrac{3}{4}:\dfrac{6}{x}=\dfrac{5}{4}\\ \dfrac{6}{x}=\dfrac{3}{4}:\dfrac{5}{4}\\ \dfrac{6}{x}=\dfrac{3}{5}\\ x=6:\dfrac{3}{5}\\ x=10\\ b,\left(x+\dfrac{7}{4}\right)\times\dfrac{2}{3}=6\\ x+\dfrac{7}{4}=6:\dfrac{2}{3}\\x+\dfrac{7}{4}=9\\ x=9-\dfrac{7}{4}\\ x=\dfrac{29}{4}\)
giúp mình đi, sao dạo này ít ngừi giúp qué zại
a) \(\dfrac{3}{4}\div\dfrac{6}{x}=\dfrac{5}{4}\)
\(\dfrac{6}{x}=\dfrac{3}{4}\div\dfrac{5}{4}\)
\(\dfrac{6}{x}=\dfrac{3}{5}\)
\(x=\left(6\div3\right)\times5\)
\(x=10\)
b) \(\left(x+\dfrac{7}{4}\right)\times\dfrac{2}{3}=6\)
\(x+\dfrac{7}{4}=6\div\dfrac{2}{3}\)
\(x+\dfrac{7}{4}=9\)
\(x=9-\dfrac{7}{4}\)
\(x=\dfrac{29}{4}\)
a,34:6x=546x=34:546x=35x=6:35x=10b,(x+74)×23=6x+74=6:23x+74=9x=9−74x=294
