Question

tính hợp lí

\(\frac{3}{4}\cdot\frac{15}{17}+\frac{3}{4}\cdot\frac{2}{17}+\frac{1}{17}\)

Answer 1

\(\frac{3}{4}\cdot\frac{15}{17}+\frac{3}{4}\cdot\frac{2}{17}+\frac{1}{17}\)

\(=\frac{3}{4}\cdot\left(\frac{15}{17}+\frac{2}{17}\right)+\frac{1}{17}\)

\(=\frac{3}{4}\cdot1+\frac{1}{17}\)

\(=\frac{5}{8}\)

Answer 2

\(\frac{3}{4}.\frac{15}{17}+\frac{3}{4}.\frac{2}{17}+\frac{1}{17}\)

=\(\frac{3}{4}.\left(\frac{15}{17}+\frac{2}{17}\right)+\frac{1}{17}\)

=\(\frac{3}{4}.1+\frac{1}{17}\)

=\(\frac{51}{68}+\frac{4}{68}=\frac{55}{68}\)

Answer 3

=3/4*(15/17+2/17)+1/17

=3/4*1 +1/7

=25/28

Answer 4

   \(\frac{3}{4}\). \(\frac{15}{17}\) + \(\frac{3}{4}\) . \(\frac{2}{17}\) + \(\frac{1}{17}\)

= \(\frac{3}{4}\). ( \(\frac{15}{17}\) + \(\frac{2}{17}\) ) + \(\frac{1}{17}\)

= \(\frac{3}{4}\) .              1              + \(\frac{1}{17}\)

=         \(\frac{3}{4}\)                        + \(\frac{1}{17}\)

=                      \(\frac{55}{68}\)

Answer 5

\(\frac{3}{4}\) . \(\frac{15}{17}\) + \(\frac{3}{4}\) . \(\frac{2}{17}\) + \(\frac{1}{17}\)

\(\frac{3}{4}\) . ( \(\frac{15}{17}\) + \(\frac{2}{17}\) ) + \(\frac{1}{17}\)

\(\frac{3}{4}\) . \(\frac{17}{17}\)+  \(\frac{1}{17}\)

\(\frac{3}{4}\) . 1 +  \(\frac{1}{17}\)

 \(\frac{3}{4}\)+  \(\frac{1}{17}\)

\(\frac{55}{68}\)

Answer 6

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