Номер 428 пожалуйста помогите плиз

1) $-3 \frac{7}{16} +( -2\frac{5}{32} )= -\frac{55}{16} - \frac{69}{32}= - \frac{110}{32} - \frac{69}{32} =- \frac{179}{32} =-5 \frac{19}{32}$
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) $-2\frac{6}{7} +6 \frac{2}{3} = -\frac{20}{7}+ \frac{20}{3}= \frac{-60+140}{21}= \frac{80}{21}=3 \frac{17}{21}$