a) -56 - ( 47 - 56 ) + 33
= -56 - 47 + 56 + 33
= ( -56 + 56 ) - ( 47 - 33 )
= -14
b) 168 + ( 35 - 68 ) - 35
= 168 + 35 - 68 - 35
= ( 168 - 68 ) + ( 35 - 35 )
= 100
a, -56 - ( 47 - 56 ) + 33
= - 56 - 47 + 56 + 33
= - 103 + 56 + 33
= -47 + 33 = -14
a) -56 - ( 47 - 56 ) + 33
= -56 - 47 + 56 + 33
= ( -56 + 56 ) - ( 47 - 33 )
= -14
b) 168 + ( 35 - 68 ) - 35
= 168 + 35 - 68 - 35
= 35 - ( 168 - 68 )
= 35 - 100
= - 65
Mik làm bừa nhé, mong bạn sửa khi mik bị sai nha
b, 168 + ( 35 - 68 ) - 35
= 168 + 35 - 68 - 35
= ( 168 - 68 ) + ( 35 - 35 )
= 100 + 0 = 100
a ) -56 - (47-56) + 33
= -56 - 47 + 56 + 33
= [(-56) + 56] + [47 + 33]
= 0 + 80 = 80
b ) 168 + (35-68) -35
= 168 + 35 - 68 -35
=(168-68) + (35-35)
= 100 + 0 = 100
k cho mik nha
a, -56-(47-56)+33
= -56-(-9)+33
= -56+9+33
= -47+33
= -14
b,168+(35-68)-35
=168+(-33)-35
= 168 -33-35
= 135-35
= 100
k cho mik nhé!