algebra

How do I solve for x on both sides of the equation, i.e. 72x+48=42x-12? Is there a standard way of figuring this out?

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asked by Lost
  1. 72x+48=42x-12

    First, subtract 42x from both sides.

    72x - 42x + 48 = 42x - 42x - 12
    30x + 48 = -12

    Then subtract 48 from both sides.

    30x = -48 + (-12)
    30x = -60
    x = -60/30
    x = -2

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    posted by Ms. Sue

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