Phần típ theo nè!
Câu 5: Tìm \(x\):
Đề bài : \(xxx\) - \(x
\) x 105 = 30
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Câu 6: Tìm \(x \):
a) \(x \) x 7 + \(x\) = 384.
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b) \( x\)\(x
\) - \(x\) x 2 = 378.
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Câu 7: Tìm số tự nhiên ab biết ab x 9 = 2ab :
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Câu 8: Viết biểu thức sau thành tích 2 thừa số:
Đề bài: ab + ab x 2 + ab x 4 + ab =
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-------- Còn nữa -------
quá đáng
\(164.53-x=47.164\)
\(x=164.53-47.164\)
\(x=117.366\)
Ta có : \(164.53-x=47.164\)
\(\Rightarrow\) \(x=164.53-47.164\)
\(\Rightarrow\) \(x=164.\left(53-47\right)\)
\(\Rightarrow\) \(x=164.6\)
\(\Rightarrow\) \(x=984\)
Vậy \(x=984\)
Cbht ❤️