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How Do You Solve a Two-Step Equation by Distributing a Fraction First?

Solve the following problem: (2/3)(x-2)=4

Summary

  1. First we distribute the 2/3
  2. Use the addition property of equality to move the 4/3
  3. LCD stands for least common denominator
  4. Multiply 4/1 by 3 on the top and bottom to get 12/3
  5. Multiplying 2/3 by its reciprocal, 3/2, will cancel it out on the left hand side

Notes

    1. To distribute, you'll have to multiply the 2/3 by everything inside the parentheses
    2. So (2/3)•x is (2/3)x
    3. And (2/3)•(-2) is -4/3
    4. You'll end up with (2/3)x-4/3 on the left hand side
    1. The addition property of equality says that we can add 4/3 to both sides without changing the equality
    1. 4 can be represented as the fraction 4/1
    2. The least common denominator is 3, so we have to change 4/1 into a fraction with a 3 in the denominator so we can add it to 4/3
    3. Multiply 4/1 by 3 on both the top and bottom to get 12/3
    4. 12/3 plus 4/3 is 16/3
    1. A reciprocal of a fraction is the flipped version of that fraction
    2. So, the reciprocal of (2/3) is (3/2)
    3. If we multiply 2/3 by its reciprocal, it cancels out and leaves us with just x on the left hand side