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    NationalMediumAlgebra7–9

    Simultaneous Equations

    Sistemas de Equações

    Solve the system: 2x+y=102x + y = 10 x−y=2x - y = 2

    Add both equations to eliminate yy.

    Solution

    Step 1 of 4

    1. 1.Adding: 2x+y+x−y=10+22x + y + x - y = 10 + 2