Răspuns:
y = 27
Explicație pas cu pas:
( y - 15 ) x 2 - [ 18 - 18 : 3 + ( 100 - 5 x 15 ) x 0 ] = 12
( y - 15 ) x 2 - [ 18 - 18 : 3 + ( 100 - 75 ) x 0 ] = 12
( y - 15 ) x 2 -[ 18 - 18 : 3 + 25 x 0 ] = 12
( y - 15 ) x 2 - ( 18 - 6 + 0 ) = 12
( y - 15 ) x 2 - ( 12 + 0 ) = 12
( y - 15 ) x 2 -12 = 12
( y - 15 ) x 2 = 12 + 12
( y - 15 ) x 2 = 24
y - 15 = 24 : 2
y - 15 = 12
y = 12 + 15
y = 27
