f ) [ ( 6x - 39 ) : 7 ] . 4 = 12
( 6x - 39 ) : 7 = 12 : 4
( 6x - 39 ) : 7 = 3
6x - 39 = 3 . 7
6x - 39 = 21
6x = 21 + 39
6x = 60
x = 60 : 6
x = 10
g ) 4x - [ ( 8000 - 3567 ) - ( 2031 - 1598 ) ] = 400
4x - [ 4433 - 433 ] = 400
4x - 4000 = 400
4x = 400 + 4000
4x = 4400
x = 4400 : 4
x = 1100
h ) 2448 : [ 119 - ( x - 6 ) ] = 24
119 - ( x - 6 ) = 2448 : 24
119 - ( x - 6 ) = 102
x - 6 = 119 - 102
x - 6 = 17
x = 17 + 6
x = 23
[ (6x-39):7].4=12
[ (6x-39):7]=12:4
[ (6x-39):7]=3
6x-39=3.7
6x-39=21
6x=21+39
6x=60
4x - [ ( 8000-3567 ) - ( 2031 - 1598 ) ] = 400
4x - [4433 - 433] = 400
4x - 4000 = 400
4x = 400 + 4000
4x = 4400
x = 4400 : 4
x = 1100