About Linear Equations

Linear equations are fundamental in algebra and represent relationships with a constant rate of change. They appear in various real-world applications like physics calculations, financial predictions, and engineering problems.

How to Use This Calculator

Enter the coefficient a (must not be zero)
Enter the constant b
Enter the right-side value c
Click "Solve for x" to get the solution

Example Problem

Solve 2x + 3 = 7:
Enter a=2, b=3, c=7
Solution: x = (7 - 3) / 2 = 2

Common Linear Equation Forms

Form	Example
Standard form	ax + b = c
Slope-intercept	y = mx + b
Point-slope	y - y₁ = m(x - x₁)

Frequently Asked Questions

What if a is zero?

If a=0 and b≠c, there's no solution. If a=0 and b=c, there are infinitely many solutions (all real numbers).

Can I use fractions or decimals?

Yes, the calculator accepts both decimal numbers (with dot or comma) and fractions like 1/2 or 3/4.

What's the precision of the solution?

Results are rounded to 4 decimal places by default. For exact fractions, the calculator will display them when possible.

Linear Equation Calculator

Calculator

Equation Graph

About Linear Equations

How to Use This Calculator

Example Problem

Common Linear Equation Forms

Frequently Asked Questions

References

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Linear Equation Calculator - Solve ax plus b equals c

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