Math  /  Algebra

QuestionAnswer the questions below about Line 1 and Line 2 shown below. 7(2+1)72+71\begin{array}{c} 7 \cdot(2+1) \\ 7 \cdot 2+7 \cdot 1 \end{array} Line 1 Line 2
Answer Attempt 1 out of 2
The expression was rewritten using the \square 7(2+1)7 \cdot(2+1) equals 77 \cdot \square which equals \square . 72+717 \cdot 2+7 \cdot 1 equals \square ++ \square which equals \square .

Studdy Solution
Evaluate the expression in Line 2:
72+71 7 \cdot 2 + 7 \cdot 1
Calculate each product separately:
72=14 7 \cdot 2 = 14 71=7 7 \cdot 1 = 7
Add the results:
14+7=21 14 + 7 = 21
So, 72+717 \cdot 2 + 7 \cdot 1 equals 14+714 + 7 which equals 2121.
Solution for the blanks: - The expression was rewritten using the distributive property. - 7(2+1)7 \cdot (2+1) equals 737 \cdot 3 which equals 2121. - 72+717 \cdot 2 + 7 \cdot 1 equals 14+714 + 7 which equals 2121.

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