5x+7y=41 3x-2y=6 metodo de igualación es una ecuación 2×2

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5x+7y=41 3x-2y=6 metodo de igualación es una ecuación 2×2

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    2021-09-09T19:21:21+00:00

    5x+7y=41

    3x-2y=6

    Multiply each equation by coefficient to y

    2(5x+7y)=2(41 )

    7(3x-2y)=7(6 )

    Add both equations

    10x+14y=82

    + 21x-14y=42

    ____________

    3x = 124

    Divide both sides by 3 to find x

    3x/3=124/3

    X= 4

    Now select an equation substitute x to solve for y .

    10x+14y=82

    10(4)+14y=82

    40+14y= 82

    Subtract 40 both sides

    40-40+14y=82-40

    14y= 42

    Divide 14 both sides

    14y/14=42/14

    Y= 3

    Your answer is point form ( 4,3)

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