a) \(\frac{x}{5}=\frac{2}{3}\Rightarrow x=\frac{5\times2}{3}=\frac{10}{3}\)
b)\(\frac{x}{3}=\frac{1}{2}\Rightarrow x=\frac{3\times1}{2}=\frac{3}{2}\)
c)\(\frac{x+3}{15}=\frac{1}{3}\Rightarrow x+3=\frac{15\times1}{3}=\frac{15}{3}=5\)mà \(x+3=5\Rightarrow x=2\)
a) x/5 = 2/3
\(\Rightarrow3x=5.2\)
\(\Rightarrow x=\frac{10}{3}\)
b) x/3 = 1/2
\(\Rightarrow2x=3\)
\(\Rightarrow x=\frac{3}{2}\)
c) x+3 / 15 = 1/3
\(\Rightarrow3\left(x+3\right)=15\)
\(\Rightarrow x+3=5\)
\(\Rightarrow x=2\)
a) x/5 = 2/3
$\Rightarrow3x=5.2$⇒3x=5.2
$\Rightarrow x=\frac{10}{3}$⇒x=103
b) x/3 = 1/2
$\Rightarrow2x=3$⇒2x=3
$\Rightarrow x=\frac{3}{2}$⇒x=32
c) x+3 / 15 = 1/3
$\Rightarrow3\left(x+3\right)=15$⇒3(x+3)=15
$\Rightarrow x+3=5$⇒x+3=5
$\Rightarrow x=2$⇒x=2
