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Mathematics 8 Online
OpenStudy (awkwardpanda):

How does writing equivalent equations help you solve a system of equations?

OpenStudy (anonymous):

It can help you when you're doing elimination.

OpenStudy (anonymous):

If the equivalent equation has matching coefficients then it can be used for elimination.

OpenStudy (unklerhaukus):

sometimes expressing the same information in a different form, can make it easier to compare with some other information

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