Question

Bỏ ngoặc rồi tính:

Answer 1

f) 192-17-192-13 +20

=175 -192-13+20

=-10

g) 112-24+47+24-112

= (112-112)+(-24+24)+47

=47

h) 25-47-26+26+47

=25+(-47+47)+(-26+26)

=25

 

Answer 2

f) (192-17)-(192+13)+20 = 192-17 -192-13+20 =-10
g) 112 -(24 -47)+(24 -112)= 112 -24 +47 +24 -112 = 47 
h ) 25 - (47 +26) -(-26 -47 ) = 25 -47 -26 +26 +47 =25

Answer 3

f)[192-17]-[192+13] +20

=192-17-192-13 +20

=175 -192-13+20

=-10

g)112-24+47+24-112

=112-[24-47]+[24-112]

= [112-112]+[-24+24]+47

=47

h)25-[47+26]+[-26+47]

=25-47-26+26+47

=25+[-47+47]+[-26+26]

=25