substitution 2x – 3y + = -45, x + 6y = 45

substitution 2x – 3y + = -45, x + 6y = 45

0 thoughts on “substitution 2x – 3y + = -45, x + 6y = 45”

  1. Answer:

    y = 9

    x = -9

    Step-by-step explanation:

    2x – 3y + = -45

    x + 6y = 45,   x = 45 – 6y

    substitute for x:

    2(45 – 6y) – 3y = -45

    90 – 12y – 3y = -45

    combine like terms:

    90 – 15y = -45

    15y = 135

    divide both sides of the equation by 15:

    y = 9

    x = 45 – 6(9) = -9

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