` Solve : 3x+7=12 ,5/2x-9=1\ a n d\ x/3+5=x/2-3` are equations in one variable `xdot`

Solve : 3/5 x+2=12/5

Solve : 2x+3y=15 ,7x-y/3=3 are equations in two variables x\ a n d\ y .

Solve: (3x+5)/(2x+7)=4

Solve |3x-2|=xdot

Solve |3x-2|=xdot

Solve : 5(2x-3)-3(3x-7)=5

3x-2-7,3/2x+9=1/2, y/3+(y-2)/4=5 are linear equations in one variable, because the highest power of the variable in each equation in one whereas the equations 3x^2-2x+1=0, y^2-1=8 are not linear equations, because the highest power of the variable in each equation is not one. In this chapter, we shall study linear equations in one variable only.

Add ; 7x^2-4x+5,\ -3x^2+2x-1\ a n d\ 5x^2-x+9.

Solve: (2x+1)/(7x-2)=(3)/(5) .

Solve 5x-2(2x-7)=2(3x-1)+7/2