When we solve for a variable in say two linear equations, by what property we are allowed to add one equation to the other or subtract one equation from the other? How can this be allowed when the two are completely different equations?(adsbygoogle = window.adsbygoogle || []).push({});

For more than two equations, does this work for adding/subtracting only two equations? Can more than two equations be simultaneously added/subtracted?

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# Why are we allowed to add two or more linear equations when solving for a variable?

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