Question

Giải phương trình
 4x - 2/3 = 0 

3- 3/5x=0

 2x+3=5

Answer 1

\(4x-\dfrac{2}{3}=0\\ \Leftrightarrow4x=\dfrac{2}{3}\\ \Leftrightarrow x=\dfrac{\dfrac{2}{3}}{4}=\dfrac{2}{12}=\dfrac{1}{6}\\ \Rightarrow S=\left\{\dfrac{1}{6}\right\}\\ 3-\dfrac{3}{5}x=0\\ \Leftrightarrow\dfrac{3}{5}x=3\\ \Leftrightarrow x=\dfrac{3}{\dfrac{3}{5}}=5\\ \Rightarrow S=\left\{5\right\}\\ 2x+3=5\\ \Leftrightarrow2x=5-3=2\\ \Leftrightarrow x=\dfrac{2}{2}=1\\ \Rightarrow S=\left\{1\right\}\)

Answer 2

a, 4x = 2/3 <=> x = 1/6 

b, 3/5x = 3 <=> x = 5 

c, 2x = 2 <=> x = 1