Question

Solve the equation Three x minus six equals fifteen for x.

A)x equals three

B)x equals seven

C)x equals twenty-seven

D)x equals sixty-three

Answer 1

3x -6 = 15
add 6 to each side
3x -6 + 6 = 15 + 6
3x = 31
divide each side by 3
3x/3 = 21/3
x = 7

Answer 2

typo 3x =21

Answer 3

x = 3

x = 7

x = 27

x = 63