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Algebra

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Explain why the addition method might be preferred over the substitution method for solving the system
2x-3y=5
5x+2y=6

  • Algebra - ,

    Two simple multiplications, and you can do it in your head.

    multiply top equation by 2
    4x-6y=10
    multiply the bottom equation by 3
    15x+6y=18

    add 19x=38
    x=2

  • Algebra - ,

    Thank you this does help. But why is the addition method preferred over the substitution method for solving the system
    2x-3y=5
    5x+2y=6

    I got how you got the 19x=38 but whatis the x=2(sorry not good with algebra)

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