Originally, Juan borrowed $10, but his mother loaned him $3 more, so he borrowed a total of $13. He sells $25 worth of lemonade
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Multiply each term in the parentheses, namely 2/3 and 3x, by the only term outside of the parentheses, -4.
Each of the resulting products becomes a new term in the addition.
You may choose to keep the answer this way, or continue to change the improper fraction into a proper fraction. A lot of teachers also prefer to have the highest degree terms (terms that have variables with the highest powers) on the left.