Question

Tìm x:

(x.0,5-3/7): 1/2=

Answer 1

Giải:

\(\left(x.0,5-\dfrac{3}{7}\right):\dfrac{1}{2}=1\dfrac{1}{7}\)

\(\Leftrightarrow\left(x.0,5-\dfrac{3}{7}\right).2=\dfrac{8}{7}\)

\(\Leftrightarrow x-\dfrac{6}{7}=\dfrac{8}{7}\)

\(\Leftrightarrow x=\dfrac{8}{7}+\dfrac{6}{7}\)

\(\Leftrightarrow x=\dfrac{14}{7}=2\)

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