Percentage
MathAnswer the three percentage questions people ask most, with the right inputs for each one.
- What is X% of Y?
- What percentage is X of Y?
Inputs
Question mode and two values
Output
Percentage and absolute result
Open calculator
MathUpdated · Aug 2026
Algebraic Expression Solver
Solve a transparent one-variable linear equation and verify the result step by step.
Start with your numbers
Algebraic Expression Solver
Change the inputs that matter to your decision. Optional assumptions stay collapsed until you need them.
Enter a linear equation
Use one equals sign. Coefficients, constants, and a single variable are supported.
Algebra answer
Solution
x = 2
Both sides equal 7.
Variablex
Decimal2.000000
Collect variable terms: 2x = 4.
Divide by 2.
x = 2.
Verify by substitution: both sides equal 7.
The solver intentionally stays with transparent linear equations so each step can be verified.
/ 01 · FAQ
Frequently asked questions
Practical notes about the inputs, assumptions, and result.
Use one variable and linear terms, such as 2x + 3 = 7 or 4x - 5 = 2x + 9. Quadratic, product, and trigonometric equations are intentionally rejected.
/ 02 · RELATED
Related calculators
Other tools in math.
Fraction
MathAdd, subtract, multiply, or divide fractions and see the reduction steps.
- How do I combine two fractions?
- What is the simplified form?
Inputs
Two fractions and an operation
Output
Simplified, mixed, and decimal forms
Open calculator
Average
MathSummarize a dataset with mean, median, mode, range, and standard deviation.
- What is the center of this dataset?
- How spread out are the values?
Inputs
A list of values
Output
Mean, median, mode, spread
Open calculator