a) (+33) - (-46) + (-32) - (+15)                         

b) (-54) + (+39) - (+10) + (-85)                        

c) (-34) + (-84) - (-54) + (-1)                            

Bài 4: Tính nhanh:

a) (1267 - 196) - (267+304)                                      

b) (3965-2378) - (437-1378) - 528                            

Bài 5: Tìm x

a) 3 - (17-x) = -12                                            

b) -26 - (x-7) = 0                                              

c) 25 + (-2+x) = 5                                            

d) 30+ (32-x) = 10                                           

Bài 6. Tính:

a) (35-15). (-4) + 24.(-13-17)                                    

b) (-13).(57-34) + 57. (13-45)  

giải hộ mình nha mình đang cần gấp trong hn ;-;

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