\(\left|\dfrac{-3}{4}\right|:\sqrt{9}-1,12.\sqrt{\dfrac{36}{49}}+1\dfrac{2}{7}.\dfrac{14}{15}\)
\(=\dfrac{3}{4}:3-1,12.\dfrac{6}{7}+\dfrac{9}{7}.\dfrac{14}{15}\)
\(=\dfrac{1}{4}-1,12.\dfrac{6}{7}+\dfrac{9}{7}.\dfrac{14}{15}\)
\(=\dfrac{1}{4}-\dfrac{24}{25}+\dfrac{9}{7}.\dfrac{14}{15}\)
\(=\dfrac{1}{4}-\dfrac{24}{25}+\dfrac{6}{5}\)
\(=\dfrac{25}{100}-\dfrac{96}{100}+\dfrac{6}{5}\)
\(=\dfrac{-71}{100}+\dfrac{6}{5}\)
\(=\dfrac{-71}{100}+\dfrac{120}{100}\)
\(=\dfrac{49}{100}\)
Đúng 3
Bình luận (0)
