Question

( 9 x - 7 / 2) - [ x - { x - 2 / 7 } ] = 36

Answer 1

Given -

( 9x - 7 / 2) - [ x - { x - 2 / 7 } ] = 36

Open { } bracket

( 9x - 7 / 2 ) - [ x - x + 2 / 7 ] = 36

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

Open ( ) bracket

9x - 7 / 2 - 2 / 7 = 36

9x - ( 49 - 4 ) / 14 = 36

9x - 45 / 14 = 36

9x = 36 + 45 / 14

9x = ( 504 + 45 ) / 14

9x = 549 / 14

x = ( 549 ) / ( 14 × 9 )

x = 549 / 126

x = 4.35

^^"