Question

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d) 5 x {55 x 5 -[(55 x 5 - 55:5) - 55 + 5]} =
e) {[(15 x 10 -98): 2 + 76] x 110 - 220}: 500 =
f) {[(5 x 10 + 178) x 15 + 900] : 60}: 36 =

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Answer 1

Răspuns:

d) 5×{55×5-[(275-11)-55+5]}=

= 5×[55×5-(264-55+5)]=

= 5×(55×5-214)=

= 5×(275-214)=

= 5×61=

= 305

e) {[(150-98):2+76]×110-220}:500=

= [(52:2+76)×110-220]:500=

= [(26+76)×110-220]:500=

= (102×110-220):500=

= (11220-220):500=

= 11000: 500=

= 22

f) {[(5×10+178)×15+900]:60}:36=

= {[(50+178)×15+900]:60}:36=

= [(228×15+900):60]:36=

= [(3420+900):60]:36=

= (4320:60):36=

= 72:36=

= 2

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