Algebra Basics for Beginners
What variables mean, and how to solve simple equations step by step.
Lesson
Algebra replaces unknown numbers with letters. If x + 7 = 15, then x = 8.
The golden rule: do the same operation to both sides. Subtract 7 from both sides to isolate x. Whatever keeps the scale balanced is legal.
Start with one-step equations, then two-step (2x + 3 = 11). Always check by substituting your answer back into the original equation.
Missing Number puzzles in MathDigits are algebra warm-ups — you hunt the hidden value that keeps a pattern true.
Master small equations first. Speed and confidence come before complicated textbooks. When ready, open Grade 6–7 algebra worksheets and the quadratic solver for later topics.
Practice
Turn this lesson into reps — play a game or open a worksheet.
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What will I learn in “Algebra Basics for Beginners”?
What variables mean, and how to solve simple equations step by step.
How long does this lesson take?
About 1 minute to read, plus optional practice time.
What should I do after reading?
Solve three one-step equations on paper, then try Missing Number and Grade 6 algebra worksheets.
Is this lesson free?
Yes. All MathDigits Learn guides are free in your browser with no signup required.