algebra

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Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this.
18x + 6y = 78
12x + 54y = -48

  • algebra -

    y = 13 - 3x (from the first equation)

    Substitute that for y in the second equation, and solve for x.

    12x + 54*13 - 162x = -48
    150 x = 750

    Take it from there.

  • algebra -

    48 divided by 2(9+3)=
    parent needs answer.... i came up up with answer of 2
    son has different answer of 288

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