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Please explain how to solve this equation with substitution: The owner of a hair salon charges $20 more per haircut than the assistant. Yesterday the assistant gave 12 haircuts. The owner gave 6 haircuts. The total earnings from haircuts were $750. How much does the owner charge for the haircut? Solve by writing and solving a system of equations.

  • Math -


    put the first equation into the second.
    now simplify, solve for A.
    Then, O=A+21

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