Question

Write and solve an equation to find the number n. The sum of twice a number and 13 is 75.

Equation: =75
The number is n =

Answer 1

Let the required number be "n"

According to the above problem,

`2n + 13 = 75 \\ 2n = 75 - 13 \\ 2n = 62 \\ n = (62)/(2) \\ \boxed{n = 31 }`

Therefore,

• n = 31 is the right answer.

Answer 2

31 is n

Explanation:

75=13+2n

75-13=62

62=2n

62/2=31

31=n