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Anya H
Anya H asked in Science & MathematicsMathematics Β· 1 decade ago

Solve the following system of equations and what method did you do to solve it?

x - y = 10

2x + y = 2

please help i cant seem to fiqure this out and i dont know where im messing up at

5 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    solve it by elimination method,

    x = 4

    y = -6

  • neon tissues
    1 decade ago

    in x-y=10 you can manipulate it to x=10+y. the substitute the x in the other equation: 2(10+y)+y=2. solve: 20+2y+y=2. simplify:20+3y=2, 18=-3y, -6=y. now you know y. first equation: x-y=10. x-(-6)=10. x+6=10. x=4. so x,y= (4, -6)

  • spiffin456
    Lv 7
    1 decade ago

    Eliminate y by adding the equations together, to get 3x=12, so x=4

    Substitute in the first equation, to get y=-6, then check in the second equation....OK

  • End Libtardation
    Lv 5
    1 decade ago

    Add the x's, add the y's, and add the constants:

    3x=12 (Notice the y's canceled out.)

    Clearly, x=4.

    Plugging that into the first equation:

    4-y=10

    y=-6.

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  • Como
    Lv 7
    1 decade ago

    3x = 12------------After adding

    x = 4

    8 + y = 2

    y = - 6

    x = 4 , y = - 6

    Perhaps easier than you thought ?

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