Очень нужно номер 1003,1004,1005.!!!!!

1003.
а) $1 - \frac{2}{5} = \frac{5}{5} - \frac{2}{5} = \frac{3}{5}$
б) $1- \frac{7}{18} = \frac{18}{18} - \frac{7}{18} = \frac{11}{18}$
в) $1- \frac{12}{13} = \frac{13}{13} - \frac{12}{13} = \frac{1}{13}$
г) $1- \frac{2}{45} = \frac{45}{45} - \frac{2}{45} = \frac{43}{45}$
1004.
а) $12 - \frac{1}{7} = (11+ \frac{7}{7}) - \frac{1}{7} = 11 \frac{6}{7}$
б) $21- \frac{4}{13} = (20+ \frac{13}{13}) - \frac{4}{13} = 20 \frac{9}{13}$
в) $25- \frac{23}{43} = (24+ \frac{43}{43}) - \frac{23}{43} = 24 \frac{20}{43}$
г) $99 - \frac{43}{45} = (98+ \frac{45}{45}) - \frac{43}{45} =98 \frac{2}{45}$
1005.
а) $12- \frac{41}{70} = (11+ \frac{70}{70} )-\frac{41}{70}= 11\frac{29}{70}$
б) $36 - \frac{7}{53} = (35+ \frac{53}{53})- \frac{7}{53} = 35 \frac{46}{53}$
в) $35 - \frac{35}{74} = (34+\frac{74}{74}) - \frac{35}{74} = 34\frac{39}{74}$
г) $46 - \frac{53}{62} = (45+ \frac{62}{62}) - \frac{53}{62}= 45 \frac{9}{62}$