Question

so sánh M và N

M = 12 - ( 15 - 20 )

N = 12 - 15 - 20

Answer 1

M = 12 - ( - 5 )                          N = ( -3 ) - 20

M = 17                                     N = -23

=> M > N 

nha bn

Answer 2

M = 12 - (15 - 20) = 12 - (-5) = 17

N = 12 - 15 - 20 = (-3) - 20 = -23

Vậy M > N

Answer 3

M=12-(15-20)

=12-(-5)

=12+5

=7

N=12-15-20

=-3-20

=-23

VI 7>-23

=>M>N

K NHE

Answer 4

\(M=12-\left(15-20\right)\)

\(\Rightarrow M=12-\left(-5\right)=17\)

\(N=12-15-20=-3-20=-23\)

 \(\Rightarrow M>N\)

Answer 5

·                     M=12−(15−20)

⇒M=12−(−5)=17

·                     N=12−15−20=−3−20=−23

 ⇒M>N

Answer 6

mnbvchhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhggggggggggggggggggggggggggggyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyiiiiiiiiiiiiiiiiiiiiiiiii