I am thinking of a number. when it is increasd by 7, it equals 21. what is my number

a. n=28

b. n=14

c. n=7

d. n=147

Question

Trooper

25 December, 23:02

+5

Answers (2)

Know the Answer?

Janiya · Answer 1

Let the number be x;

x+7=21

Subtracting 7 from each side,

x+7-7=21-7

x=14

Andrea Hood · Answer 2

If X is increased by 7 to make 21

X + 7 = 21

then rearrange the equation to get X

X = 21-7

X = 14 (b)

I am thinking of a number. when it is increasd by 7, it equals 21. what is my numbera. n=28b. n=14c. n=7d. n=147