Номер 428 пожалуйста помогите плиз

1) $-3 frac{7}{16} +( -2frac{5}{32} )= -frac{55}{16} - frac{69}{32}= - frac{110}{32} - frac{69}{32} =- frac{179}{32} =-5 frac{19}{32}$
2) $-4 frac{2}{9} +(-1 frac{17}{36} )=- frac{38}{9} - frac{53}{36} = -frac{152}{36} - frac{53}{36} =- frac{205}{36} =-5 frac{25}{36}$
3) $-7+1 frac{13}{16} =-7+ frac{29}{16}= frac{-112+29}{16} =- frac{83}{16}=-5 frac{3}{16}$
4) $-1 frac{1}{12} +3 frac{4}{9} =- frac{13}{12}+ frac{31}{9} = frac{-39+124}{36} = frac{85}{36}=2 frac{13}{36}$
5) $-5 frac{16}{21} +2 frac{5}{9} = -frac{121}{21}+ frac{23}{9}= frac{-363+161}{63} =- frac{202}{63}=-3 frac{13}{63}$
6) $4 frac{9}{16} +(-9 frac{5}{6} )= frac{73}{16} - frac{59}{6} = frac{219-472}{48}=- frac{253}{48}=-5 frac{13}{48}$
7) $3 frac{5}{17}+(- 5 frac{8}{51} )= frac{56}{17} - frac{263}{51} = frac{168-263}{51}=- frac{95}{51}=-1 frac{44}{51}$
8) $-2frac{6}{7} +6 frac{2}{3} = -frac{20}{7}+ frac{20}{3}= frac{-60+140}{21}= frac{80}{21}=3 frac{17}{21}$