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4th grade Algebra

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How to solve this problem.
3X-Y=12

  • 4th grade Algebra -

    minus 3x to both sides
    -Y=12-3X. THEN DIVIDE BY -1 TO BOTH SIDES
    SO Y=-12+3X

  • 4th grade Algebra -

    hard difficult immposible fail impassible

  • 4th grade Algebra -

    3X-Y=12
    I think probably you are supposed to get +y alone on the left
    first add -3x to both sides
    -3x + 3x - y = -3x + 12
    or
    -y = -3x + 12
    but we want +y, not - y
    So multiply every term on both sides by -1
    (-1)(-y) = (-1)(-3x) + (-1)(12)
    or
    y = 3x - 12

  • 4th grade Algebra -

    y=4

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