Question

- 23 целых 3/5 - (-12 целых 1/2)
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Answer 1

$\displaystyle~-23\frac{3}{5} -(-12\frac{1}{2} )=-\frac{118}{5} +\frac{25}{2} =\frac{-236+125}{10} =-\frac{111}{10} =-11\frac{1}{10}=-11,1.$