Solve 3+x-2a=0

$$3 + x - 2 a = 0$$

Solve for a

$$a=\frac{x+3}{2}$$

Steps for Solving Linear Equation

Subtract 3 from both sides. Anything subtracted from zero gives its negation.

$$x-2a=-3$$

Subtract x from both sides.

$$-2a=-3-x$$

The equation is in standard form.

$$-2a=-x-3$$

Divide both sides by -2.

$$\frac{-2a}{-2}=\frac{-x-3}{-2}$$

Dividing by -2 undoes the multiplication by -2.

$$a=\frac{-x-3}{-2}$$

Divide -3-x by -2.

$$a=\frac{x+3}{2}$$

Solve for x

$$x=2a-3$$

Solution Steps

Subtract 3 from both sides. Anything subtracted from zero gives its negation.

$$x-2a=-3$$

Add 2a to both sides.

$$x=-3+2a$$