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ikoreanx3

  • 2 years ago

Solve the given system of equation by substitution method. 5x+y=15 6x-2y=2

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  1. RadEn
    • 2 years ago
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    from the 1st equ. 5x+y=15 ----> y = 15 - 5x, subtitute this y to the 2nd equ : 6x-2y=2 6x - 2(15 - 5x) = 2 6x - 30 + 10x = 2 16x = 30 + 2 16x = 32 x = 32/16 = 2

  2. RadEn
    • 2 years ago
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    now, subtitute the x to y = 15 - 5x, giving us y = 15 - 5(2) y = 15 - 10 y = 5

  3. RadEn
    • 2 years ago
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    therefore, the solution be (2,5)

  4. kay-jay
    • 2 years ago
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    you can also find the third equation first which will be a long process

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