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Equation Solver

Equation Solver

Solve linear equations of the form ax + b = c instantly. Get the value of x with step-by-step breakdown.

Math

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Coefficient (a)

Constant (b)

Constant (c)

Formula

Solve linear equations of the form ax + b = c. For example, 2x + 3 = 11 → x = (11 − 3) / 2 = 4.

ax + b = c → x = (c − b) / a

Percentage: The percentage value you want to apply

Number: The original number or value

Result: The calculated result

How It Works

1Enter coefficient a, constant b, and constant c.
2Click Calculate to solve for x.
3The result shows x = (c − b) / a.

Examples

Solve 2x + 3 = 11

1.Enter a=2, b=3, c=11.
2.Calculate: x = (11 − 3) / 2 = 4.
3.Result: x = 4.

Result: 4

Solve 5x − 7 = 18

1.Enter a=5, b=-7, c=18.
2.Calculate: x = (18 − (−7)) / 5 = 25/5 = 5.
3.Result: x = 5.

Result: 5

Frequently Asked Questions

If a = 0, the equation becomes b = c. If b ≠ c there is no solution; if b = c, any x works.

Yes, a can be negative. The formula works the same way.

Decimal coefficients are supported. For example, 0.5x + 2 = 10 works correctly.

Coefficients up to ±999 are supported for a, and up to ±999,999 for b and c.

For quadratic, cubic, or higher-degree equations, use the Quadratic Equation, Cubic Equation, or Polynomial calculators.

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CalculateMe Team

Last updated: 2026-07-13

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