Linear Equation Calculator with Steps
Solve equations in the form ax + b = c and see the inverse operations used to isolate x.
Solve ax + b = c
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Answer
x = 4
- Check: 2(4) + 3 = 11
How to use the linear equation calculator
Use this focused calculator for one-variable linear equations. It shows the subtraction and division steps needed to isolate x.
- Enter a, b, and c for ax + b = c.
- Subtract b from both sides.
- Divide both sides by a.
- Check the answer by substituting x back into the original equation.
Formula or method
For ax + b = c, x = (c - b) / a.
Worked examples
Solve for x
Problem: 2x + 3 = 11
Solution: 2x = 8, so x = 4.
Negative coefficient
Problem: -3x + 6 = 15
Solution: -3x = 9, so x = -3.