Question

1) 13-6/17
2) 6 1/7-2 6/7
И решите уравнения
а) 45 13/19-x=31 15/19
б) 3 17/23+x = 4 21/23
Спасибо

Answer 1

1)$13- frac{6}{17}= frac{221}{17}- frac{6}{17}= frac{215}{17}=12 frac{11}{17}$
2)$6 frac{1}{7}-2 frac{6}{7}= frac{43}{7} - frac{20}{7}= frac{23}{7}=3 frac{2}{7}$
Уравнения:
)$45 frac{13}{19}-x=31 frac{15}{19} x=45 frac{13}{19}-31 frac{15}{19}= frac{868}{19}- frac{604}{19}= frac{264}{19}=13 frac{17}{19}$
$x=13 frac{17}{19}$
б)$3 frac{17}{23} +x=4 frac{21}{23} x=4 frac{21}{23}-3 frac{17}{23}= frac{113}{23}- frac{86}{23}= frac{27}{23}=1 frac{4}{23}$
$x=1 frac{4}{23}$