Answer:
15
Step-by-step explanation:
let the number be n then 9 subtracted from it is n - 9
This is then multiplied by 5 to equal 30
5(n - 9) = 30 ← divide both sides by 5
n - 9 = 6 ( add 9 to both sides )
n = 15
The number is 15
Answer: x = 15
Step-by-step explanation:
"nine is subtracted from from a number" :
We'll let the "number" be x, so we have:
(x - 9) [nine subtracted from a number]
" result is multiplied by five"
(x - 9) *5
"to equal thirty."
(x - 9) *5 = 30
------------------------
(x - 9) *5 = 30
5x - 45 = 30
5x = 30 + 45
5x = 75
x = 15
