Systems of equations solver
Solve systems of two or three linear equations by substitution or elimination.
Eq. 1
Eq. 2
Solving systems
Find values that satisfy all equations simultaneously. A 2-variable system is two lines — the solution is their intersection.
Methods
Substitution: Solve one equation for a variable, plug into the other. Elimination: Add/subtract equations to eliminate a variable. Matrix: Write as Ax = b and row reduce.
Types of solutions
One solution: Lines cross (consistent, independent). No solution: Parallel lines. Infinite: Same line.
Popular equations
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