Solve for x 4x-3=21

$4 x - 3 = 21$

Step 1

Move all terms not containing $x$ to the right side of the equation.

Add $3$ to both sides of the equation.

$4 x = 21 + 3$

Add $21$ and $3$ .

$4 x = 24$

Step 2

Divide each term in $4 x = 24$ by $4$ and simplify.

Divide each term in $4 x = 24$ by $4$ .

$\frac{4 x}{4} = \frac{24}{4}$

Simplify the left side.

Cancel the common factor of $4$ .

Cancel the common factor.

$\frac{4 x}{4} = \frac{24}{4}$

Divide $x$ by $1$ .

$x = \frac{24}{4}$

Simplify the right side.

Divide $24$ by $4$ .

$x = 6$