Question

( \(-\dfrac{3}{20}-\left(-1,2\right)\)

\(Đổi\left(-1,2\right)\) ra phân số rồi tính ạ

Answer 1

`-3/20-(-1,2)=-3/20+1,2=-3/20+6/5=-3/20+24/20=21/20`

Answer 2

\(-\dfrac{3}{20}-\left(-1,2\right)=-\dfrac{3}{20}-\left(-\dfrac{6}{5}\right)=-\dfrac{3}{20}+\dfrac{6}{5}=-\dfrac{3}{20}+\dfrac{24}{20}=\dfrac{-3+24}{20}=\dfrac{21}{20}\)