MathAlgebraLinear algebraSystems of linear equations

Solving systems of linear equations by substitution method

Theory

The system of two linear equations

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How many solution does this system have?

{4x−23y=5−x+7y=−10.\begin{cases} 4x - 23y = 5 \\ - x + 7y = - 10 \end{cases}.(Note that sometimes it is easier to start solving the system not from the first equation).

Select one option from the list

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