Question

СРОЧНОООО!!! 3 и 5 столбик полностью. 70 БАЛЛОВ!!!

Answer 1

$10) \: \: \: \: \: - 3 \frac{1}{5} + 1 \frac{2}{7} = - \frac{16}{5} + \frac{9}{7} = \frac{ - 112 + 45}{35} = - \frac{67}{35} = - 1 \frac{32}{35}$

$11) \: \: \: \: \: - 1 \frac{1}{4} + 4 \frac{1}{6} = - \frac{5}{4} + \frac{25}{6} = \frac{ - 15 + 50}{12} = \frac{35}{12} = 2 \frac{11}{12}$

$12) \: \: \: \: \: - 6 \frac{2}{9} - \frac{8}{15} = - \frac{56}{9} - \frac{8}{15} = \frac{ - 280 - 24}{45} = - \frac{304}{45} = - 6 \frac{38}{45}$

$13) \: \: \: \: \: 5 \frac{1}{8} - 7 \frac{5}{12} = \frac{41}{8} - \frac{89}{12} = \frac{123 - 178}{24} = \frac{ - 55}{24} = - 2 \frac{7}{24}$

$14) \: \: \: \: \: - \frac{2}{3} - \frac{3}{7} = \frac{ - 14 - 9}{21} = - \frac{23}{21} = - 1 \frac{2}{21}$

$15) \: \: \: \: \: - \frac{5}{12} + \frac{7}{16} = \frac{ - 20 + 21}{48} = \frac{1}{48}$

$16) \: \: \: \: \: - \frac{13}{25} + \frac{11}{15} = \frac{ - 39 + 55}{75} = \frac{16}{75 \\ }$

$17) \: \: \: \: \: \frac{7}{18} - \frac{17}{24} = \frac{28 - 51}{72} = - \frac{23}{72}$

$18) \: \: \: \: \: 1 \frac{1}{6} - 1.25 = \frac{7}{6} - \frac{125}{100} = \frac{350 - 375}{300} = - \frac{25}{300} = - \frac{1}{12}$

$19) \: \: \: \: \: - 2 \frac{4}{5} - 6.1 = - 2.8 - 6.1 = - 8.9$

$20) \: \: \: \: \: - 0.75 + \frac{5}{8} = - 0.75 + 0.625 = - 0.125$

$21) \: \: \: \: \: - 3.3 - 8 \frac{2}{3} = - \frac{33}{10} - \frac{26}{3} = \frac{ - 99 - 260}{30} = - \frac{359}{30} = - 11 \frac{29}{30}$

$22) \: \: \: \: \: \frac{1}{3} - ( - \frac{2}{5}) = \frac{1}{3} + \frac{2}{5} = \frac{5 + 6}{15} = \frac{11}{15}$

$23) \: \: \: \: \: - \frac{2}{7} + ( - \frac{1}{3} ) = - \frac{2}{7} - \frac{1}{3} = \frac{ - 6 - 7}{21} = - \frac{13}{21}$

$24) \: \: \: \: \: 7 \frac{1}{11} - ( - 2 \frac{2}{3}) = \frac{78}{11} + \frac{8}{3} = \frac{234 + 88}{33} = \frac{322}{33} = 9 \frac{25}{33}$

$25) \: \: \: \: \: - 1 \frac{1}{2} - 2 \frac{1}{4} = - 1.5 - 2.25 = - 3.75$

$26) \: \: \: \: \: - 3 \frac{1}{3} - 4 \frac{1}{6} = - \frac{10}{3} - \frac{25}{6} = \frac{ - 20 - 25}{6} = - \frac{45}{6} = - 7 \frac{3}{6} = - 7.5$

$27) \: \: \: \: \: - 2 \frac{1}{16 } + 5 \frac{1}{4} = - \frac{33}{16} + \frac{21}{4} = \frac{ - 33 + 84}{16} = \frac{51}{16} = 3 \frac{3}{16}$

$28) \: \: \: \: \: 6 \frac{3}{4} - 3 \frac{2}{5} = 6.75 - 3.4 = 3.35$

$29) \: \: \: \: \: - 1 \frac{2}{3} - 3 \frac{3}{7} = - \frac{5}{3} - \frac{24}{7} = \frac{ - 35 - 72}{21} = - \frac{107}{21} = - 5 \frac{2}{21}$

$30) \: \: \: \: \: - \frac{3}{5} - \frac{7}{10} = - 0.6 - 0.7 = - 1.3$

$31) \: \: \: \: \: \frac{3}{14} - \frac{5}{7} = \frac{3 - 10}{14} = - \frac{7}{14} = - 0.5$

$32) \: \: \: \: \: - \frac{1}{6} + \frac{3}{10} = \frac{ - 5 + 9}{30} = \frac{4}{30}$

$33) \: \: \: \: \: \frac{3}{4} - \frac{1}{6} = \frac{9 - 2}{12} = \frac{7}{12}$