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17 June, 21:21

3x - 5y = - 35

12x+y=-6

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Answers (1)
  1. 18 June, 00:57
    0
    x = y =

    Step-by-step explanation:

    in order to solve this system of equation let us say

    3x - 5y = - 35 ... equation 1

    12x+y=-6 ... equation 2

    from equation 2

    12x+y=-6 ... equation 2

    y = - 6 - 12x ... equation 3

    substitute for y = - 6 - 12x into equation 1

    3x - 5y = - 35 ... equation 1

    3x - 5 (-6 - 12x) = - 35

    3x + 30 + 60x = - 35

    63x + 30 = - 35

    collect like terms

    63x = - 35 - 30

    63x = - 65

    divide both sides by 63

    63h/63 = - 65 / 63

    x = - 1.03

    put x = 1. 03 into equation 3

    y = - 6 - 12x ... equation 3

    y = - 6 - 12 (-1.03)

    y = - 6 + 12.38

    y = 6.38
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