How to Solve Two Equations with Two Unknowns?

Write both equations in standard form

Choose a method: substitution, elimination, or graphing

If using substitution, solve one equation for one variable

Substitute that expression into the other equation

Solve the resulting one-variable equation

Substitute the found value back into one original equation

Solve for the second variable

Check both values in both equations

If using elimination, align like terms

Multiply one or both equations if needed so one variable has opposite coefficients

Add or subtract the equations to eliminate one variable

Solve the resulting one-variable equation

Substitute back to find the other variable

Check both values in both equations

If using graphing, graph both equations on the same coordinate plane

Find the intersection point

Use the intersection coordinates as the solution

Check the solution in both equations

Write the solution as an ordered pair

State whether the system has one solution, no solution, or infinitely many solutions

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