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28 November, 16:56

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

+5
Answers (1)
  1. 28 November, 17:11
    0
    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
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Home » Mathematics » 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.
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