Question

1) (0,5 - 2x).3/2=-3

2) (0,5x-2x).3/2=-3

Answer 1

\(\left(0,5-2x\right)\dfrac{3}{2}=-3\)

\(\Rightarrow\left(\dfrac{1}{2}-2x\right)\dfrac{3}{2}=-3\)

\(\Rightarrow\left(\dfrac{1}{2}-2x\right)=-3.\dfrac{2}{3}\)

\(\Rightarrow\dfrac{1}{2}-2x=-2\)

\(\Rightarrow2x=\dfrac{1}{2}+2\)

\(\Rightarrow2x=\dfrac{5}{2}\)

\(\Rightarrow x=\dfrac{5}{2}.\dfrac{1}{2}\)

\(\Rightarrow x=\dfrac{5}{4}\)

Answer 2

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Answer 3

Hai cái này giống nhau mà ...

\(\left(0,5-2x\right)\dfrac{3}{2}=-3.\)

\(\left(0,5-2x\right)=-3:\dfrac{3}{2}.\)

\(0,5-2x=-2.\)

\(2x=0,5-\left(-2\right).\)

\(2x=0,5+2.\)

\(2x=2,5.\)

\(x=2,5:2.\)

\(x=1,25.\)

Vậy \(x=1,25.\)

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