Solving a one-step algebra problem: worked example
22 October 2026
One-step algebra problems are a key part of 11+ maths. These questions help children get used to finding a missing number when only one step is needed to solve it.
Here is a clear example to show how you can solve a one-step algebra problem step by step.
Worked example
Solve: x + 7 = 12
Step 1: Take away 7 from both sides.
x + 7 - 7 = 12 - 7
Step 2: x = 5
The correct answer is 5.
Now your child can spot when a question only needs one step to find the answer. They will see this type of algebra problem often in 11+ maths and can practise similar questions to build confidence.
Key insight: Understanding one-step algebra makes it easier to solve more complex equations later on.
