Tìm x:
a) 12 : x = 3 b) 21 : x = 7 c) 30 : x = 3
d) 25 : x = 5 e) 7 : x = 1 g) 6 : x = 6
a) 12 : x = 3
x = 12 : 3
x = 4
b) 21 : x = 7
x = 21 : 7
x = 3
c) 30 : x = 3
x = 30 : 3
x = 10
d) 25 : x = 5
x = 25 : 5
x = 5
e) 7 : x = 1
x = 7 : 1
x = 7
g) 6 : x = 6
x = 6 : 6
x = 1
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