linear equation

One kung pao chicken and two big macs provide 2620 calories. Two kung pao chickens and one big mac provide 3740 calories. find the caloric content of each item.

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  1. 1x+2y=2620
    2x+1y=3740
    You can use elimination to solve, which is where you multiply one or more equations to eliminate either the x's or y's.
    Multiplying the top equation by negative 2 will cancel the x's.
    -2x-4y=-5240
    2x+1y=3740
    Add the equations together.
    -3y=-1500
    Divide by negative 3.
    y=500
    Plug y=500 into any of the equations to figure out what x equals. Post if you want it checked.

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    posted by Jen

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