Solve one-step equations

Key Notes:

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.

Learn with an example

Solve for w.

w − 3 = 5

w = —–

Solve.

w − 3 = 5
w − 3 + 3 = 5 + 3 Add 3 to both sides
w = 8 Simplify

Solve for b.

b + 2 = 7

b = ——-

Solve.

b + 2 = 7
b + 2 − 2 = 7 − 2 Subtract 2 from both sides
b = 5 Simplify

Solve for k.

k/2=3

k = —-

Solve.

k/2=3

k/2 . 2= 3 · 2 Multiply both sides by 2
k = 6 Simplify

let’s practice!