Question

X phần 5 = -4 phần 10

Answer 1

\(\frac{x}{5}=-\frac{4}{5}\)

\(\Rightarrow5x=-4.5\)

\(\Rightarrow5x=-20\)

\(\Rightarrow x=-20:5\)

\(\Rightarrow x=-4\)

Vậy x = -4

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Answer 2

\(\frac{x}{5}=\frac{-4}{10}\)

\(\Rightarrow x.10=\left(-4\right).5\)

\(\Rightarrow x.10=-20\)

\(\Rightarrow x=\left(-20\right):10\)

\(\Rightarrow x=-2\)

Vậy \(x=-2.\)

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Answer 3

\(\frac{x}{5}=\frac{-4}{10}\)

\(\Rightarrow10x=5.\left(-4\right)\)

\(\Rightarrow10x=-20\)

\(\Rightarrow x=\frac{-20}{10}=-2\)

Vậy \(x=-2\)