3 years ago

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

Mathematics

1 answer:

bazaltina [42]3 years ago

3 0

Answer:

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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