Question

Express the following statements as an algebraic equation.
The product of 3 and a number is twice the sum of the number and 5

Answer 1

Answer:

let number be n

n x 3 = 2(n + 5)

3n = 2n + 10

n = 10

To confirm,

n x 3 = 2(n + 5)

10 x 3 = 2(10 + 5)

30 = 2(15)

30 = 30

Answer 2

Answer:

Let the unknown number be x

$3x = 2(x + 5) \\ 3x = 2x + 10 \\ 3x - 2x = 10 \\ x = 10$