Question

Calculați:
{[96:6+(288:4:8-125:5:5)]×90}:100=
9000-{146+[200:10×9-(348×7-49×48)]}=
99×{364:7:2+[(195×3:5-100)+63:3:7]}:2=
2800:100:7+{(154-23×6):8+[100-(132:4+2)×2]}:6=

Answer 1

Răspuns:

Explicație pas cu pas:

{[ 96 : 6 + ( 288 : 4 : 8 - 125 : 5 : 5 ) ] × 90 } : 100= 18

= { [ 16 + ( 72 : 8 - 25 : 5 ) ] × 90 } : 100 =

= { [ 16 + ( 9 - 5 ) ] × 90 } : 100 =

= [ ( 16 + 4 ) × 90 ] : 100 =

= ( 20 × 90 ) : 100 =

= 1 800 : 100 =

= 18  

_________________________________

9 000 - { 146 + [ 200 : 10 × 9 - ( 348 × 7 - 49 × 48 ) ] } = 8 758

= 9 000 - { 146 + [ 20 × 9 - ( 2 436 - 2 352 ) ] } =

= 9 000 - [ 146 + ( 180 - 84 ) ] =

= 9 000 - ( 146 + 96 ) =

= 9 000 - 242 =

= 8 758  

_____________________________________

99 × { 364 : 7 : 2 + [ ( 195 × 3 : 5 - 100 ) + 63 : 3 : 7 ] } : 2 = 2 277

= 99 × { 52 : 2 + [ ( 585 : 5 - 100 ) + 21 : 7 ] } : 2 =

= 99 × { 26 + [ ( 117 - 100 ) + 3 ] } : 2 =

= 99 × [ 26 + ( 17 + 3 ) ] : 2 =

= 99 × ( 26 + 20 ) : 2 =

= 99 × 46 : 2 =

= 4554 : 2 =

= 2 277  

___________________________________________

2 800 : 100 : 7 + {( 154 - 23 × 6 ) : 8 + [100 - (132 : 4 + 2 ) × 2 ]} : 6 =

= 28 : 7 + { ( 154 - 138 ) : 8 + [ 100 - ( 33 + 2 ) × 2 ] } : 6 =

= 4 + [ 16 : 8 + ( 100 - 35 × 2 ) ] : 6 =

= 4 + [ 2 + ( 100 - 70 ) ] : 6 =

= 4 + ( 2 + 30 ) : 6 =

= 4 + 32 : 6 =

= 4 + 5,(3) =

= 9,(3)

Sigur ai gresit ! Paranteza acolada trebuia pusa la inceputul exercitiului:

{2 800 : 100 : 7 + ( 154 - 23 × 6 ) : 8 + [100 - (132 : 4 + 2 ) × 2 ]} : 6 = 6

= {28 : 7 + ( 154 - 138 ) : 8 + [ 100 - ( 33 + 2 ) × 2 ] } : 6 =

= [4 + 16 : 8 + ( 100 - 35 × 2 ) ] : 6 =

= [ 4 + 2 + ( 100 - 70 ) ] : 6 =

= ( 4 + 2 + 30 ) : 6 =

= 36 : 6 =

= 6