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pogonyaev
2 years ago
8

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

Mathematics
2 answers:
lara31 [8.8K]2 years ago
4 0

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.

castortr0y [4]2 years ago
3 0

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.

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