Question

When 3 times a number is subtracted from 45 the result is 5 plus the number. what is the number?

Answer 1

n = 10

Explanation:

let the number be n , then

45 - 3n = n + 5 ( subtract n from both sides )

45 - 4n = 5 ( subtract 45 from both sides )

- 4n = - 40 ( divide both sides by - 4 )

n = 10