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System of Equations Calculator

Solve system of equations

This solver (calculator) will try to solve a system of 2, 3, 4, 5 equations of any kind, including polynomial, rational, irrational, exponential, logarithmic, trigonometric, hyperbolic, absolute value, etc. It can find both the real and the complex solutions. To solve a system of linear equations with steps, use the system of linear equations calculator.

Enter a system of equations:
Comma-separated, for example, x+2y=5,3x+5y=14.
Solve for (comma-separated):
Leave empty for automatic determination, or specify variables like x,y.

If the calculator did not compute something or you have identified an error, or you have a suggestion/feedback, please write it in the comments below.

Your input: solve $$$\begin{cases} x^{2} - 4 x - y + 9=0 \\ y=\frac{21}{4} \end{cases}$$$ for $$$x$$$, $$$y$$$.

Answer

$$$x=\frac{3}{2}=1.5$$$, $$$y=\frac{21}{4}=5.25$$$

$$$x=\frac{5}{2}=2.5$$$, $$$y=\frac{21}{4}=5.25$$$