Question

Which equation represents the statement: Three times the sum of a number and 5 is –30?

Answer 1

Answer:

$3(n+5)=-30$

Step-by-step explanation:

1. Divide the problem into pieces. The sum of a number and five can be written as $n+5$, where n is any number.

2. Since the question tells us that this sum is multiplied by 3, we expand the expression to $3(n+5)$.

3. Finally, the question tells us that this expression is equal to -30. This means we can express the entire statement as the equation $3(n+5)=-30$.

Answer 2

Answer:

3(n+5)=-30

Step-by-step explanation:

Three times the sum of a number and 5 is - 30

Vocabulary:

times = multiplication, represented with *

sum = addition, represented by +

unknown number = n

Three * the sum of a number and 5

The sum of a number and 5 is the same as saying n + 5

So we are multiplying 3 by n + 5

Because n is an unknown variable we have to separate the sum of n and 5 from being multiplied by 3 with parenthesis. We do this because if we want to multiply 3 by the sum of n and 5. If we put 3 * n + 5 we are only multiplying the unknown variable by 3 not including the 5 that is added to it.

So we get 3( n + 5 ) is -30

3(n+5)=-30 is the answer.