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a) Nếu a = 10 thì 65 + a = 65 + 10 = 75.
Giá trị của biểu thức 65 + a với a = 10 là 75.
b) Nếu b = 7 thì 185 – b = 185 – 7 = 178.
Giá trị của biểu thức 185 – b với b = 7 là 178.
c) Nếu m = 6 thì 423 + m = 423 + 6 = 429.
Giá trị của biểu thức 423 + m với m = 6 là 429.
d) Nếu n = 5 thì 185 : 5 = 37.
Giá trị của biểu thức 185 : n với n = 5 là 37.
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133345 : 568 = 234,7623239
22115689: 5467 = 4045,306201
5764+ ( 65 + 16 )= 5845
Bài đối với các bạn là dễ đúng ko :
Thì giải theo cách giao hoán của phép cộng
65 + a = 65 + 10 = 75
k mình nhé mọi người ơi