Equation
Use x as the variable. Multiplication may be implicit: 2(x+3), 4x, x/3.
=
Supported: + − × ÷, parentheses, integers, terminating decimals, fractions such as 3/4, and unary signs. Non-linear terms such as x² or x·x are rejected instead of guessed.
Strong input handling: both sides are parsed into an affine form ax + b. Unsupported or non-linear algebra is explicitly flagged, so the tool never silently turns a different problem into a linear one.
Solution
x = 11
Exact: 11 · Decimal: 11
✓ Unique solution
The horizontal coordinate is x. The vertical coordinate is the value of each side. A unique solution is the intersection of the two lines.