Question

I know the answer is 9 but can someone explain it?

Answer 1

A

Explanation:

`(9x+7)/(2)` - [ x - [
`(-2)/(7)` ]] = 36← distribute bracket by - 1

`(9x+7)/(2)` - x +
`(x-2)/(7)` = 36

multiply through by 14 ( the LCM of 2 and 7 ) to clear the fractions

7(9x + 7) - 14x + 2(x - 2) = 504 ← distribute parenthesis on left side

63x + 49 - 14x +2x - 4 = 504 ← simplify left side

51x + 45 = 504 ( subtract 45 from both sides )

51x = 459 ( divide both sides by 51 )

x = 9