Question

giúp mình với

A=\(\dfrac{1-0,5\cdot\left(3,84-2,4\right):0,8}{\dfrac{4}{5}-\left(1\dfrac{1}{3}-2\dfrac{1}{6}\right)-1,5}\)

mình cảm ơn

Answer 1

Ta có: \(A=\dfrac{1-0.5\cdot\left(3.84-2.4\right):0.8}{\dfrac{4}{5}-\left(1\dfrac{1}{3}-2\dfrac{1}{6}\right)-1.5}\)

\(=\dfrac{1-0.5\cdot1.44:0.8}{\dfrac{4}{5}-\left(\dfrac{4}{3}-\dfrac{13}{6}\right)-\dfrac{3}{2}}\)

\(=\dfrac{1-0.9}{\dfrac{4}{5}+\dfrac{5}{6}-\dfrac{3}{2}}=\dfrac{0.1}{\dfrac{2}{15}}=\dfrac{3}{4}\)

Answer 2

Giải:

A=1-0,5.(3,84-2,4):0,8 / 4/5-(1 1/3 - 2 1/6)-1,5

A=1-0,5.1,44:0.8 / 4/5-(4/3-13/6)-3/2

A=1-0.9 / 4/5-(-5/6)-3/2

A=0.1 / 2/15

A= 1/10 : 2/15

A=3/4

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