Last week, Ellen bought 4 apples for $2.40. This week she bought 9 apples for $5.40. If the cost per apple remains the same, how
1 answer:
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For this case we must simplify the following expression:
So, solving the first parentheses we have:
We have to:
We add similar terms taking into account that different signs are subtracted and the sign of the major is placed:
Finally, the simplified expression is:
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