01PractiseMake your own call first.
Digital SAT · MathematicsQuestion 1 of 2
Algebra foundations
If 3(2x - 1) = 15, what is x?
Choose the answer that best completes the question.
Algebra foundations
One question, fully understood.
1 of 2
Multiple choice
A clearer practice loop
Build understanding into every attempt.
Good preparation has a rhythm. Try the question, see the method, return to the idea, then carry it into the next attempt.
02UnderstandSee the reasoning, step by step.
Digital SAT · MathematicsWorked explanation
Linear equations
Why does x equal 3?
Start with the same expression from the question, then change only one thing at a time.
- 1Expand the bracket3(2x - 1) becomes 6x - 3.
- 2Keep the equation balancedAdd 3 to both sides.
- 3Isolate xDivide both sides by 6.
03ReviewNotice the idea worth returning to.
Sample reflectionOne question
Return to the idea
Linear equations
When an equation has brackets, begin by expanding before moving terms across the equals sign.
RememberDo the same operation on both sides.This keeps the equation balanced.
04ImproveTake a clearer next attempt.
Next practiceOriginal sample
Take another look
Percentages
25% of a number is 20. What is the number?
Math and Reading & Writing
Start with the interactive mathematics sample and see the learning approach in action.
Subject-led preparation
A considered path for building core knowledge and confident problem-solving.
Deeper understanding
A calm, step-by-step approach for the more demanding work ahead.
Themiteus prep is an exam-preparation project built around clear practice and understandable reasoning. This site currently includes a Digital SAT-style sample question.