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450×2-20×(40-5×4)×2-33×3

Răspuns :

450×2-20×(40-5×4)×2-33×3 
900-20x (40-20)x2-99 = 
900-20 x 20 x 2-99 = 
900-400 x 2-99 = 
900-800-99 =
100-99 =

450*2-20*(40-5*4)*2-33*3
=900-20*(40-20)*2-99
=900-20*20*2-99
=900-400*2-99
=900-800-99
=100-99
=1