Question

Buna cine ma poate ajuta va rog... Calculeaza: a) 5x{55x5-[(55x5-55:5)-55+5]}=
b) {[(15x10-98):2+76]x110-220}:500=
c) {[(5x10+178)x15+900]:60}:36=

Answer 1

Răspuns:

a)

5x{55x5-[(55x5-55:5)-55+5]}=

5x{275-[(275-11)-55+5]}=

5x[275-(264-55+5)]=

5x[275-(209+5)]=

5x(275-214)=

5×61=

305

b)

{[(15x10-98):2+76]x110-220}:500=

{[(150-98):2+76]x110-220}:500=

[(52:2+76)x110-220]:500=

[(26+76)x110-220]:500=

(102x110-220):500=

(11 220-220):500=

11 000:500=

22

c)

{[(5x10+178)x15+900]:60}:36=

{[(50+178)x15+900]:60}:36=

[(228x15+900):60]:36=

[(3 420+900):60]:36=

(4 320:60):36=

72:36=

2