Odpowiedź :
Odpowiedź:
5 i 2/7 +4,4= 5 i 2/7 +4 i 4/10= 5 i 2/7+ 4 i 2/5= 5 i 10/35+ 4 i 14/35=
= 9 i 24/35
5,18 - 1 i 2/5 = 5,18 - 1 i 4/10= 5, 1 8
- 1, 4
______________
3 , 7 8
3 i 2/7 * 1,4= 23/7 * 14/10( skracamy 7 i 14 przez 7)= 23 *2/10=
= 46/10= 4 i 6/10= 4 i 3/5
4 i 1/2 : 0,375 = 4,5 : 0,375= 4500:375= 12
Szczegółowe wyjaśnienie:
Odpowiedź:
[tex]5\frac{2}{7}+4,4=5\frac{2}{7}+4\frac{2}{5}=5\frac{10}{35}+4\frac{14}{35}=9\frac{24}{35}\\\\\\5,18-1\frac{2}{5}=5\frac{18}{100}-1\frac{2}{5}=5\frac{9}{50}-1\frac{2}{5}=5\frac{9}{50}-1\frac{20}{50}=4\frac{59}{50}-1\frac{20}{50}=3\frac{39}{50} \\\\lub\\\\5,18-1\frac{2}{5}=5,18-1,4=3,78\\\\\\3\frac{2}{7}*1,4=\frac{23}{7}*\frac{14}{10}=\frac{23}{7}*\frac{7}{5}=\frac{23}{5}=4\frac{3}{5}[/tex]
[tex]4\frac{1}{2}:0,375=\frac{9}{2}:\frac{375}{1000}=\frac{9}{2}:\frac{3}{8}=\frac{\not9^3}{\not2_{1}}* \frac{\not8^4}{\not3_{1}}=3*4=12[/tex]