Question

 a, (-5)-(-12)+(-4)       b, 7+(-14)-(-20)    c, 17-(-19)-(+25)   giúp mình với chiều mình học rồi thank you

 

Answer 1

a) ( -5 ) - ( -12 ) + ( -4 )

 = ( -5 ) + 12 + ( -4 )

 = 7 + ( -4 )

 = 3

b) 7 + ( -14 ) - ( -20 )

 = 7 + ( -14 ) + 20

 = ( -7 ) + 20

 = 13

c) 17 - ( -19 ) - ( + 25 )

 = 17 + 19 + ( -25 )

 = 36 + ( -25 )

= 11

Answer 2

 a, (-5)-(-12)+(-4) 

=[(-5)-(-12)]+(-4) 

=7+(-4) 

=3

  b, 7+(-14)-(-20)

= 7+[(-14)-(-20)]

=7+6

=13

c, 17-(-19) -(+25)

=[ 17-(-19)] -(+25)

=36-(+25)

=11

Answer 3

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