Toán Lớp 6: A/ (-28) + (-56)
B/ 2.[105 -(40 – 4.9)]+16
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Toán Lớp 6: A/ (-28) + (-56)
B/ 2.[105 -(40 – 4.9)]+16
Giúp em bài này vớiiiiiiiiiiiiiiii
Comments ( 2 )
a)(-28)+(-56)=-(28+56)=-84
———
b)2.[105-(40-4.9)]+16
=2.[105-(40-36)]+16
=2.[105-4]+16
=2.101+16
=202+16
=218
_________chúc bạn học tốt__________
a)
( -28 ) + ( -56 )
= -28 – 56
= -( 28 + 56 )
= -84
b)
2. [ 105 – ( 40 – 4. 9 ) ] + 16
= 2. [ 105 – ( 40 – 36 ) ] + 16
= 2. [ 105 – 4 ] + 16
= 2. 101 + 16
= 202 + 16
= 218