Question

50-51+40-41+30-31+60

Answer 1

50 - 51 + 40 -41 + 30 - 31 + 60

= (60 - 51) + (50 - 41) + (40 - 31)+30

= 9 + 9 + 9 + 30

= 57

Answer 2

câu  trả lời = 57

Answer 3

50-51+40-41+30-31+60

= 9+9+9+60

= 9x3+60

= 27+60

= 87

Answer 4

50-51+40-41+30-31+60

=(-1)+(-1)+(-1)+60

=57

Answer 5

\(50-51+40-41+30-31+60\)

\(=\left(50-41\right)+\left(40-31\right)+\left(60-51\right)+30\)

\(=9+9+9+30\)

\(=27+30\)

\(=57\)

T mik mik T lại hứa đó

Answer 6

TL

=(60-51)+(50-41)+(40-31)--3

=9+9+9+30

=57

Hok tốt nhen