Solving One-Step Equations Page 3 of 5
Equations with Subtraction
Let's try another equation, this time with subtraction.
Remember, addition and subtraction are inverses. To undo subtraction, we need to use the inverse operation: addition.
Step 1: Use the inverse operation to get the variable by itself.
To undo subtracting 3, we need to add 3. Make sure to add 3 to both sides of the equation.
Step 2: Check your answer.
Plug in 9 for x in the original equation. Does 9 - 3 = 6? Yes, the answer is correct.