Question

In which of the expressions below will x = 25? Select all that apply.

Answer 1

Option C

Option D

Explanation:

We have to calculate each expression to find for which one is the solution is x=25.

A)

`(x + 6)/(3) = 10 \\ x + 6 = 10 \: . \: 3 \\ x + 6 = 30 \\ x = 30 - 6 \\ x = 24`

B)

`x - 8 = 32 \\ x = 32 + 8 \\ x= 40`

C)

`6x - (15 + 4x) = 35 \\ 6x - 15 - 4x = 35 \\ 2x = 35 + 15 \\ 2x = 50 \\ x = (50)/(2) \\ x = 25`

D)

`(3x)/(5) = 15 \\ 3x = 15 \: . \: 5 \\ 3x = 75 \\ x = (75)/(3) \\ x = 25`

E)

`4(x - 18) = 12 \\ x - 18 = (12)/(4) \\ x - 18 = 3 \\ x = 3 + 18 \\ x = 21`