\(\frac{1}{2}.x+\frac{3}{5}.x=3+2\)
\(\left(\frac{1}{2}+\frac{3}{5}\right).x=5\)
\(\frac{11}{10}.x=5\)
\(x=5:\frac{11}{10}\)
\(x=\frac{50}{11}\)
1/2 . x + 3/5 . ( x -2 ) = 3
=> 1/2 . x + 3/5 x - 6/5 = 3
=> x . ( 1/2 + 3/5 ) - 6/5 = 3
=> x . 11/10- 6/5 = 3
=> x . 11/10 = 3 + 6/5
=>x . 11/10 = 21/5
=> x = 21/5 : 11/10
=> x = 42/11
1/2.x+3/5.(x-2)=3 1/2.x+3/5.x=2+3 1/2.x+3/5.x=5 x.(1/2+3/5)=5 x.11/10=5 x=5:11/10 x=50/11
\(\frac{1}{2}x+\frac{3}{5}\left(x-2\right)=3\Rightarrow\frac{1}{2}x+\frac{3}{5}x-\frac{-7}{5}=3\Rightarrow\left(\frac{1}{2}+\frac{3}{5}\right)x+\frac{7}{5}\:\)
bạn tự làm nốt nhé
