Odpowiedź:
13]
3,45-(-2 1/3)= 3 45/100 +2 1/3= 5 9/20+1/3=5 27/60 + 20/60=
5 47/60
-5 1/4-4,3=-5,25 -4,3= - 9,55
-4 5/6+3,4= - 4 5/6+ 3 2/5= -4 25/30 +3 12/30= -1 13/30
-5,3-(-2 1/8)=-5,3+ 2,125= - 3,175
Szczegółowe wyjaśnienie:
Cześć!
a)
[tex]3,45-(-2\frac{1}{3} )=\frac{69}{20} +2\frac{1}{3} =\frac{69}{20}+ \frac{7}{3}=\frac{347}{60}=\boxed{5\frac{47}{60} }[/tex]
b)
[tex]-5\frac{1}{4} -4,3=-\frac{21}{4} -\frac{43}{10} =-\frac{191}{20}=\boxed{-9\frac{11}{20} }[/tex]
c)
[tex]-4\frac{5}{6} +3,4=-\frac{29}{6}+ \frac{17}{5}=-\frac{43}{3} =\boxed{-1\frac{13}{3} }[/tex]
d)
[tex]-5,3-(-2\frac{1}{8} )=-\frac{53}{10} +2\frac{1}{8} =-\frac{53}{10} +\frac{17}{8} =-\frac{127}{40}= \boxed{-3\frac{7}{40} }[/tex]
Pozdrawiam,
MrBarte!
