1) 6,3+19цел 1/2+3цел 2/3, 2) 2,64+5цел 2/3+2/15, 3)9, 25+3цел 5/6+ 1цел 2/3, 4) 2 цел 1/4+ 3,6+1/6, 5)0,05+10цел 7/12+1/5, 6)4цел 3/8+2,25+14цел 7/10, 7) 9,5+ 5 цел 9/10+ 6цел 1/3, 8)19,6+ 1/6+3 цел 2/15. решите прав!

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Ответ:

Маша4гклаша

24.05.2020 01:36

1) $6,3+19\frac{1}{2}+3\frac{2}{3}=6\frac{3}{10}+19\frac{1}{2}+3\frac{2}{3}=\frac{63}{10}+\frac{39}{2}+\frac{11}{3}=\frac{189+585+110}{30}=\frac{884}{30}=\frac{442}{15}=29\frac{7}{15}$

2) $2,64+5\frac{2}{3}+\frac{2}{15}=2\frac{64}{100}+5\frac{2}{3}+\frac{2}{15}=2\frac{16}{25}+5\frac{2}{3}+\frac{2}{15}=\frac{66}{25}+\frac{17}{3}+\frac{2}{15}=\frac{198+425+10}{75} =\frac{633}{75}=\frac{211}{25}=8\frac{11}{25}$

3) $9,25+3\frac{5}{6}+1\frac{2}{3}=9\frac{25}{100}+3\frac{5}{6}+1\frac{2}{3}=9\frac{1}{4}+3\frac{5}{6}+1\frac{2}{3}=\frac{37}{4}+\frac{23}{6}+\frac{5}{3}=\frac{111+46+20}{12}=\frac{177}{12}=\frac{59}{4}=14\frac{3}{4}$

4) $2\frac{1}{4}+3,6+\frac{1}{6}=2\frac{1}{4}+3\frac{6}{10}+\frac{1}{6}=2\frac{1}{4}+3\frac{3}{5}+\frac{1}{6}=\frac{9}{4}+\frac{18}{5}+\frac{1}{6}=\frac{135+216+10}{60}=\frac{361}{60}=6\frac{1}{60}$

5) $0,05+10\frac{7}{12}+\frac{1}{5}=\frac{5}{100}+10\frac{7}{12}+\frac{1}{5}=\frac{1}{20}+10\frac{7}{12}+\frac{1}{5}=\frac{1}{20}+\frac{127}{12}+\frac{1}{5}=\frac{3+635+12}{60} =\frac{650}{60}=\frac{65}{6}=10\frac{5}{6}$

6) $4\frac{3}{8}+2,25+14\frac{7}{10}=4\frac{3}{8}+2\frac{25}{100}+14\frac{7}{10}=4\frac{3}{8}+2\frac{1}{4}+14\frac{7}{10}=\frac{35}{8}+\frac{9}{4}+\frac{147}{10}=\frac{175+90+588}{40}=\frac{853}{40}=21\frac{13}{40}$

7) $9,5+5\frac{9}{10}+6\frac{1}{3}=9\frac{5}{10}+5\frac{9}{10}+6\frac{1}{3}=9\frac{1}{2}+5\frac{9}{10}+6\frac{1}{3}=\frac{19}{2}+\frac{59}{10}+\frac{19}{3}=\frac{285+177+190}{30}=\frac{652}{30}=\frac{326}{15}=21\frac{11}{15}$

8) $19,6+\frac{1}{6}+3\frac{2}{15}=19\frac{6}{10}+\frac{1}{6}+3\frac{2}{15}=19\frac{3}{5}+\frac{1}{6}+3\frac{2}{15}=\frac{98}{5}+\frac{1}{6}+\frac{47}{15}=\frac{588+5+94}{30}=\frac{687}{30}=\frac{229}{10}=22\frac{9}{10}$

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Ответ:

osipovalex1969

24.05.2020 01:36

1)6,3+19,5+3 2/3=189/30+585/30+110/30=884/30=29 7/15
2)2,64+5 2/3+2/15=66/25+17/3+2/15=198/75+425/75+10/75=8 11/25
3)9,25+3 5/6+1 2/3=37/4+23/6+5/3=111/12+46/12+20/12=14,75
4)2 1/4+3,6+1/6=9/4+18/5+1/6=135/60+216/60+10/60=6 1/60
5)0,05+10 7/12+1/5=1/20+127/12+1/5=3/60+635/60+12/60=10 5/6
6)4 3/8+2,25+14 7/10=35/8+9/4+147/10=175/40+90/40+588/40=21 13/40
7)9,5+ 5 9/10+ 6 1/3=19/2+59/10+19/3=285/30+177/30+190/30=21 11/15
8)19,6+ 1/6+3 2/15=98/5+1/6+47/15=588/30+5/30+94/30=22,9