Solving one and two-step equations

To solve for a variable, use inverse operations to undo the operations in the equation. Be sure to do the same operation to both sides of the equation.

To solve for a variable, use inverse operations to undo the operations in the equation. Be sure to do the same operation to both sides of the equation.

To solve for a variable, use inverse operations to undo the operations in the equation. Be sure to do the same operation to both sides of the equation.

 $\frac{n}{4}$  − 3 = 2

 $\frac{n}{4}$   − 3 + 3 = 2 + 3 (Add 3 to both sides)

 $\frac{n}{4}$   = 5 (Simplify)

 $\frac{n}{4}$   · 4 = 5 · 4 (Multiply both sides by 4)

n = 20 (Simplify)

5b − 11 = 9
5b − 11 + 11 = 9 + 11 (Add 11 to both sides)
5b = 20 (Simplify)
 $\frac{5b}{5}=\frac{20}{5}$   (Divide both sides by 5)
b = 4 (Simplify)