Question

Câu hỏi : Tính hợp lí

a) 2575 + 37 - 2576 - 29

b)  34 + 35 + 36 + 37 - 14 - 15 - 16 -17

c) - 7624 + ( 1543 + 7624 )

d) ( 27 - 514 ) - ( 486 - 73 )

 GIÚP MÌNH => MÌNH KICK CHO

Answer 1

a)2575 + 37 + 2576 -29

= ( 2575 - 2576 ) + ( 37 - 29)

= -1+ 8

= 8-1

= 7

Answer 2

a, \(2575+37-2576-29\)

\(=\left(2575-2576\right)+\left(37-29\right)\)

\(=\left(-1\right)+8=7\)

P/s: Cấm k :>

Answer 3

\(34+35+36+37-14-15-16-17\)

\(=\left(34-14\right)+\left(35-15\right)+\left(36-16\right)+\left(37-17\right)\)

\(=20+20+20+20=80\)

Answer 4

\(-7624+\left(1543+7624\right)\)

\(=\left(-7624+7624\right)+1543\)

\(=0+1543=1543\)

Answer 5

\(\left(27-514\right)-\left(486-73\right)\)

\(=27-514-486+73\)

\(=\left(27+73\right)-\left(514+486\right)\)

\(=100-1000=-900\)

Answer 6

bé ngu ngu v~

Answer 7

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