1: i am thinking of a number. When it is increased by 7, it equals 21. what is my number

N = 28

N = 14

N = 7

N = 147

2: i am thinking of a number. It is multiplied by 9. The product is 27. What is my number

N = 36

N = 18

N = 3

N = 4

3: Translate the following sentence into an equation. Then solve the equation

The difference of a number and 7 an 21

21 - 7 = n; n = 14

n + 7 = 21; n=14

n + = 21; n = 28

21 - 7 = n; n = 14

Question

Mathematics

Shaylee

7 July, 06:44

1: i am thinking of a number. When it is increased by 7, it equals 21. what is my number

N = 28

N = 14

N = 7

N = 147

2: i am thinking of a number. It is multiplied by 9. The product is 27. What is my number

N = 36

N = 18

N = 3

N = 4

3: Translate the following sentence into an equation. Then solve the equation

The difference of a number and 7 an 21

21 - 7 = n; n = 14

n + 7 = 21; n=14

n + = 21; n = 28

21 - 7 = n; n = 14

+2

Answers (1)

Know the Answer?

Simon Spence · Answer 1

N = 14

Step-by-step explanation:

Let the number be N. Then:

N + 7 = 21

Now solve this equation for N:

Subtract 7 from both sides. We get:

N = 14