tính bằng cách thuận tiện 27/8 – 7/3 + 4/3 – 2= …………………………………… = …………………… 24/10/2021 Bởi Audrey tính bằng cách thuận tiện 27/8 – 7/3 + 4/3 – 2= …………………………………… = ………………………………….
$\dfrac{27}{8} – \dfrac{7}{3} + \dfrac{4}{3} -2 $ $= (\dfrac{27}{8} -2) + (- \dfrac{7}{3} + \dfrac{4}{3})$ $= (\dfrac{27}{8} – \dfrac{16}{8}) -1$ $= \dfrac{11}{8} -1 = \dfrac{11}{8} – \dfrac{8}{8} = \dfrac{3}{8}$ Bình luận
Đáp án: $\frac{27}{8} – \frac{7}{3} +\frac{4}{3} – 2$ $= (\frac{-7}{3} +\frac{4}{3})+ (\frac{27}{8} – 2)$ $= -1+(\frac{27}{8}-\frac{16}{8})$ $= -1+\frac{11}{8}$ $= \frac{3}{8}$ Bình luận
$\dfrac{27}{8} – \dfrac{7}{3} + \dfrac{4}{3} -2 $
$= (\dfrac{27}{8} -2) + (- \dfrac{7}{3} + \dfrac{4}{3})$
$= (\dfrac{27}{8} – \dfrac{16}{8}) -1$
$= \dfrac{11}{8} -1 = \dfrac{11}{8} – \dfrac{8}{8} = \dfrac{3}{8}$
Đáp án:
$\frac{27}{8} – \frac{7}{3} +\frac{4}{3} – 2$
$= (\frac{-7}{3} +\frac{4}{3})+ (\frac{27}{8} – 2)$
$= -1+(\frac{27}{8}-\frac{16}{8})$
$= -1+\frac{11}{8}$
$= \frac{3}{8}$