1 ) ( x + 282 - 75 ) : 2 = 104
( x + 207 ) : 2 = 104
( x + 207 ) = 104 × 2
x + 207 = 208
x = 208 - 207
x = 1
Verificare :
( 1 + 282 - 75 ) : 2 =
( 283 - 75 ) : 2 =
208 : 2 = 104
x + 4 : 10 + 101 = 133
x + 4 : 10 = 133 - 101
x + 4 : 10 = 32
x + 3 = 32 × 10
x + 3 = 320
x = 320 - 3
x = 317