tând ordinea efectuării operațiilor: a) 87 – 87: 87 - (100 – 100 : 5) = b) [ 42 – 8:( 240 : 6 - 216:6)] : 4 = c) 27: 3 (250 – 375 : 15 ) - 27 x 15 = va rog repede dar si rezolvarea​

Răspuns :

Salutare!

87-87:87-(100-100:5) =

87-87:87-(100-20)=

87-87:87-80=

87-1-80=

86-80=

6

[42-8:(240:6-216:6)]:4=

[42-8:(40-36)]:4=

(42-8:4):4=

(42-2):4=

40:4=

10

27:3×(250-375:15)-27×15=

27:3×(250-25)-27×15=

27:3×225-405=

9×225-405=

2025-405=

1 620

Explicație pas cu pas:

ღSalutare!ღ

a) 87-87:87-(100-100:5) =

= 87-1-(100-20) =

= 86-80 =

= 6

b) [42-8:(240:6-216:6)]:4 =

= [42-8:(40-36)]:4 =

= (42-8:4):4 =

= (42-2):4 =

= 40:4 =

= 10

c) 27:3×(250-375:15)-27×15 =

= 9×(250-25)-405 =

= 9×225-405 =

= 2 025-405 =

= 1 620

Succes!;)