Tìm x:
a) \( x \times 5 = 40\)
b) x : 4 = 5
c) x – 4 = 6
a) \(x \times 5 = 40 \)
x = 40 : 5
x = 8
\( x = 5 \times 4 \)
x = 20
c) x - 4 = 6
x = 6 + 4
x = 10
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