Question

[Mai anh]

Tìm x :

(x+5)-(x-9)=x+2

\(\frac{x-1}{3}+\frac{3x-5}{2}+\frac{2x}{9}+\frac{-5x+3}{9}=\frac{210}{420}\)

Answer 1

[Lê Thanh Trung]

\(\left(X+5\right)-\left(X-9\right)=X+2\)\(2\)

\(=>X+5-X+9=X+2\)

\(=>\left(X-X\right)+\left(5+9\right)=X+2\)

 \(=>0+14=X+2\)

\(=>14=X+2\)

\(=>X=12\)

Answer 2

[Vũ Nguyễn Thái Hà]

(x+5)-(x-9)=x+2

x+5-x+9=x+2

x-x+14=x+2

12=x(cũng bớt mới về đi 2 đơn vị)

hoặc x=14-2suy ra x=12