if 3 is added to a number and the sum is tripled, the result is 19 more than the number. find the number

Question

Mathematics

Elyse Lopez

22 July, 08:04

if 3 is added to a number and the sum is tripled, the result is 19 more than the number. find the number

+5

Answers (2)

Know the Answer?

Monique · Answer 1

The number is 5

Step-by-step explanation:

if 3 is added to a number and the sum is tripled, the result is 19 more than the number

(n+3) * 3 = n+19

Distribute the 3

3n + 9 = n+19

Subtract n from each side

3n-n + 9 = n-n+19

2n + 9 = 19

Subtract 9 from each side

2n+9-9 = 19-9

2n = 10

Divide by 2

2n/2 = 10/2

n=5

The number is 5

Dwayne Mcconnell · Answer 2

Dwayne Mcconnell 22 July, 10:29

0

(x + 3) ·3 = x + 19 - -> x = 5