the product of a number and 9, increased by 4, is 58. find the number

Question

please answer my question quickly because i have a quiz tomorrow.

Answer 1

You have an English language sentence that we need to translate into Mathematics language.

English)  (the product of a number and 9), (increased by 4), (is 58)

 

Math)     (Number x 9), (+ 4), (= 58) 

I put in the () to show you what parts go together

Call the Number N, we can use anything (x,s, ...) but N makes sense

 

(N x 9) + 4 = 58

 

Can you do the rest?  subtract 4 from both sides, divide both sides my 9, there is the answer

Answer 2

n - number

 

9n + 4 = 58

 

9n = 54

 

n = 54/9 = 6