600 : {[( 100 - 23. 5 ) : 10 ] . 2 }
= 600 : {[( 100 - 8.5 ) : 10 ] . 2 }
= 600 : {[( 100 - 40 ):10 ] . 2 }
= 600 : {[ 60 :10 ] . 2 }
= 600 : { 6.2 }
= 600 : 12
= 50
( 7x - 23 ) : 5 = 43
( 7x - 23 ) : 5 = 64
7x - 23 = 64x5
7x - 23 = 320
7x = 320 + 23
7x = 343
x = 343 : 7
x = 49
( 35 - x ) . 326= 328
( 35 - x ) = 328 : 326
35 - x = 32
35 - x = 9
X = 35 -9
X = 26
600 : {[( 100 - 23 . 5 ) : 10 ] . 2}
= 600 : {[( 100 - 8 . 5 ) : 10 ] . 2}
= 600 : {[( 100 - 40 ) : 10 ] . 2}
= 600 : {[ 60 : 10 ] . 2}
= 600 : {6 . 2}
= 600 : 12
= 50
(7x - 23) : 5 = 43
(7x - 23) : 5 = 64
(7x - 23) = 64 . 5
(7x - 23) = 320
7x = 320 + 23
7x = 343
x = 343 : 7
x = 49
(35 - x) . 326 = 328
(35 - x) = 328 : 326
(35 - x) = 32
(35 - x) = 9
x = 35 - 9
x = 26