Question

Calculați:
(55-25)×[(282:3-2):2]=
25+[7×2×18:2 -5×(5×4-36:3)]=
250 ×4-[80+(76×13-801:9)-479]=
21×[(36×48-40):8+(72×41-12):5]+100=
540+[(780:4+380×2):5+343]:6-600=
Va rog mai repede dau coroana nu glumesc deloc

Answer 1

( 55 - 25 ) × [( 282 : 3 - 2 ) : 2 ] = 1 380 
= 30 × [ ( 94 - 2 ) : 2 ] = 
= 30 × ( 92 : 2 ) =
= 30 × 46 =
= 1 380 


25 + [ 7 × 2 × 18 : 2 - 5 × ( 5 × 4 - 36 : 3 ) ] = 113 
= 25 + [ 14 × 18 : 2 - 5 × ( 20 - 12 ) ]= 
= 25 + ( 126 - 5 × 8 ) =
= 25 + ( 126 - 40 ) =
= 25 + 86 =
= 113 


250 × 4 - [ 80 + ( 76 × 13 - 801 : 9 ) - 479] = 500
= 1 000 - [ 80 + ( 988 - 89 ) - 479 ] =
= 1 000 - ( 80 + 899 - 479 ) =
= 1 000 - ( 979 - 479 ) =
= 1 000 - 500 =
= 500

21 × [ ( 36 × 48 - 40 ) : 8 + ( 72 × 41 - 12 ) : 5 ] + 100= 16 900
= 21 × [ ( 1 728 - 40 ) : 8 + ( 2 952 - 12 ) : 5 ] + 100 =
= 21 ×( 1 688 : 8 + 2 940 : 5 ) + 100 =
= 21 × ( 211 + 588) + 100 =
= 21 × 800 + 100 =
= 16 800 + 100 =
= 16 900 


540 + [ ( 780 : 4 + 380 × 2 ) : 5 + 343 ] : 6 - 600 = 29 
= 540 + [ ( 195 + 760 ) : 5 + 343 ] : 6 - 600 =
= 540 + ( 955 : 5 + 343 ) : 6 - 600 =
= 540 + ( 191 + 343 ) : 6 - 600 =
= 540 + 534 : 6 - 600 =
= 540 + 89 - 600 =
= 629 - 600 =
= 29