Question

tính giá trị biểu thức : 

A = -1,6: ( 1+2/3

B= 1,4 . 15/29 -(4/5 +2/3) : 2 1/5

Answer 1

\(A=-1,6:\left(1+\frac{2}{3}\right)\)

\(A=\frac{-8}{5}:\frac{5}{3}\)

\(A=\frac{-24}{25}\)

\(B=1,4.\frac{15}{29}-\left(\frac{4}{5}+\frac{2}{3}\right):2\frac{1}{5}\)

\(B=\frac{7}{5}.\frac{15}{29}-\frac{22}{15}:\frac{11}{5}\)

\(B=\frac{21}{29}-\frac{22}{15}.\frac{5}{11}\)

\(B=\frac{21}{29}-\frac{2}{3}\)

\(B=\frac{5}{87}\)

Answer 2

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Answer 3

A= -1,6:( 1 + 2/3)

A= -1,6: 5/3

A= -1/6 x 3/5

A= -1/10

B= 1,4 . 15/29 - (4/5 + 2/3) : 2 1/5

B= \(\frac{21}{29}-\frac{22}{15}:\frac{11}{5}\)

B= \(\frac{21}{29}-\frac{22}{15}.\frac{5}{11}\)

B= \(\frac{21}{29}-\frac{2}{3}\)

B= \(\frac{5}{87}\)