Question

-3/8-(-3/24)

Tính theo cách hợp lí

 

Answer 1

`-3/8 - (-3/24 ) = -3/8 -(-1/8) = -3/8 + 1/8 = -2/8 = -1/4`

Answer 2

\(-\dfrac{3}{8}-\left(-\dfrac{3}{24}\right)\)

\(=-\dfrac{3}{8}+\dfrac{3}{24}\)

\(=-\dfrac{9}{24}+\dfrac{3}{24}\)

\(=\dfrac{-9+3}{24}\)

\(=-\dfrac{6}{24}\)

\(=-\dfrac{1}{4}\)