The right answer is first option: 7+21
Step-by-step explanation:
Given expression is;
7(1+3)
In mathematics, the term outside is multiplied by each term inside the bracket, therefore, in this expression;
[tex]7(1+3)\\7*1+7*3\\7+21\\[/tex]
The given expression 7(1+3) is equals to 7+21.
The right answer is first option: 7+21
Keywords: multiplication, addition
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Answer: 7+21
Step-by-step explanation:
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