Question

tính bằng cách thuận tiện nhất : a) 3/2 x1/6 + 3/2 x 2/6 + 3/2 x3/6 =?

Answer 1

a)3/2 x (1/6+2/6+3/6)

=3/2 x 1

=3/2

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Answer 2

\(\frac{3}{2}\cdot\frac{1}{6}+\frac{3}{2}\cdot\frac{2}{6}+\frac{3}{2}\cdot\frac{3}{6}\)

\(=\frac{3}{2}\cdot\left(\frac{1}{6}+\frac{2}{6}+\frac{3}{6}\right)\)

\(=\frac{3}{2}\cdot\frac{6}{6}\)

\(=\frac{3}{2}\cdot1=\frac{3}{2}\)

**** !

Answer 3

3\2