Răspuns :
525 - 32 × 12 + 4 × [ 625 - ( 320 + 13 × 21 ) ] =
525 - 384 + 4 × [ 625 - ( 320 + 273 ) ] =
141 + 4 × ( 625 - 593 ) =
141 + 4 × 32 =
141 + 128 = 269
525 - 384 + 4 × [ 625 - ( 320 + 273 ) ] =
141 + 4 × ( 625 - 593 ) =
141 + 4 × 32 =
141 + 128 = 269