a ) ( -173 ) + 53 = -120
b ) ( -210 ) + 210 = 0
c ) 196 + ( -94 ) = 102
d ) ( -77 ) + 0 = -77
e ) 41 + ( - 171 ) = -130
mk nhanh nhất
a , ( - 173 ) + 53
= - ( 173 - 53 )
= - 120
b , ( - 210 ) + 210
= 0
c , 196 + ( - 94 )
= 196 - 94
= 102
d , ( - 77 ) + 0
= - 77
e , 41 + ( - 171 )
= - ( 171 - 41 )
= - 130