algebra

Please help me! Sorry there are 4 questions I need to check my attempts with to see if I am on track. Thanks!!

1. 5-3[2(3x-4)+3]

2. Evaluate when x = -3 and y = 2

3x squared - 4y squared
_______________________
4x - 7y

3. -3/4y = -24

4.
m + 1 5 2m - 1
______ + ___ = ______
4 6 12

asked by zach
  1. 1. 5-3[2(3x-4)+3]

    Start from the inside and work outward.

    5 - 3(6x - 8 + 3) = 5 - 18x + 5 = -18x

    2. (3x^2 - 4y^2)/(4x -7y) Just plug in the numbers and calculate. (x^2 = x squared online.)

    3. Multiply both sides by -4/3.

    4. From the way you express the equation, I don't know which numbers belong where.

    (m + 1)/4 + 5/6 = (2m - 1)/12?

    posted by PsyDAG

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