Question

calculează{8500-[200+(999:3+14*2)*10]:5+15}*2, (3600+1400):10:5+(160-90:3),(825+124*5):5+(168*3+195*14),524123+14721:3-14200:100+17245*15

Answer 1

{ 8 500 - [ 200 + ( 999 : 3 + 14 × 2)×10 ] : 5 + 15 } × 2= 
={ 8 500 - [ 200 + ( 333 + 28 ) × 10 ] : 5 + 15 } × 2 =
= [ 8 500 - ( 200 + 361 × 10 ) : 5 + 15 ] × 2 =
= [ 8 500 - ( 200 + 3 610 ) : 5 + 15 ] × 2 =
= ( 8 500 - 3 810 : 5 + 15 ) × 2 =
= ( 8 500 - 762 + 15 ) × 2 =
=  ( 7 738 + 15 ) × 2 = 
= 7 753 × 2 =
= 14 506 

 ( 3 600 + 1 400 ) : 10 : 5 + ( 160 - 90 : 3)
= 5 000 : 10 : 5 + ( 160 - 30 ) =
= 500 : 5 + 130 =
= 100 + 130 =
= 230 

(825 + 124 × 5) : 5 + ( 168 × 3 + 195 × 14) =
= ( 825 + 620 ) : 5 + ( 504 + 2 730 ) =
= 1 445 : 5 + 3 234 =
= 289 + 3 234 =
= 3 523 

524 123 + 14 721 : 3 - 14 200 : 100 + 17 245 × 15 = 
= 524 123 + 4 907 - 142 + 258 675 = 
= 529 030 - 142 + 258 675 = 
= 528 888 + 258 675 =
= 787 563