78 - 64 - 88 + 22 + 42 + 56
= 14 - 88 + 22 + 42 + 56
= -74 + 22 + 42 + 56
= -52 + 42 + 56
= -10 + 56
= 46
78-64-88+22+42+56=66
Tinh nhan theo cach nao thi tu biet
78 - 64 - 88 + 22 + 42 + 56
= [ 64 + 56 ] + [ 78 + 42 ] + [ 88 + 22]
= 120 + 120 +120
= 360
78 - 64 - 88 + 22 + 42 + 56
= 14 - 88 + 22 + 42 + 56
= -74 + 22 + 42 + 56
= -52 + 42 + 56
= -10 + 56
= 46
neu lam theo cach cua doremon thi 2 dau tru vut o dau vay ban ai thay dung ik cho ho cai
78-64-88+22+42+56
=14-88+22+42+56
=-74+22+42+56
=-52+42+56
=-10+56
=46
78-64-88+22+42+56
=(78+42) + (-64+56) + (-88+22)
= 120+[(-8)+(-66)]
=120+(-74)
=46
