cheyennegolden6621
23.08.2019 •
Mathematics
There are 26.2 miles in a marathor write the number of miles using a fraction
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Ответ:
Ответ:
a student writes the sum of 7 times a number n plus 5 to describe thhe expression 7(n + 5). explain the error
we need sum of seven times a number plus 5
so, 7*number+5
that is, we must multiply first and then add 5 to the result. so, we get,
or, 7n+5
so, the mistake in 7(n+5) is 5 is added before multiplying. whereas ithe expression wants us to multiply 7 to the number n to get7n and then add 5 to get 7n+5 and not 7(n+5)