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Ответ дан
sweetcheeksp

( - 4.5 +4frac{1}{3} )( - 5 frac{1}{7} ) + 1 frac{1}{3} div (5.6)

1) - 4.5 + 4 frac{1}{3}  =  -  frac{45}{10}  +  frac{13}{3}  =  -  frac{135}{30}  +  frac{130}{30}  =  -  frac{5}{30}  =  -  frac{1}{6}

2) -  frac{1}{6}  times ( - 5 frac{1}{7} ) = frac{1 times 36}{6 times 7}  =  frac{6}{7}

3)1 frac{1}{3}  div (5.6) =  frac{4}{3}  div  frac{56}{10}  =  frac{4 times 10}{3 times 56}  =  frac{10}{42}  =  frac{5}{21}

4) frac{6}{7}   +  frac{5}{21}  =  frac{18}{21}  +  frac{5}{21}  =  frac{23}{21}  = 1 frac{2}{21}

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