Odpowiedź :
Odpowiedź:
2/7+(-0,5)= 2 / 7 - 0,5 = 2 / 6,5 = [tex]\frac{4}{13}[/tex]
-3/5+8= - 3 / 13 = [tex]-\frac{3}{13}[/tex]
0,125+(-1/8)= 0,125 - 0,125 = 0
7/50+0,29= 7 / 50,29 = [tex]\frac{700}{5029}[/tex]
b) 7,4-2i1/4= 7,4 - 2,25 = 5,15
3i1/2-2,75= 3,5 - 2,75 = 0,75
1i2/3-0,35= [tex]\frac{5}{3} - \frac{35}{100} = \frac{5}{3} - \frac{7}{20} = \frac{100}{60} - \frac{21}{60} = \frac{79}{60}[/tex]
6,5-5/6= [tex]\frac{65}{10} - \frac{5}{6} = \frac{390}{60} - \frac{50}{60} = \frac{340}{60}[/tex]
-3,2-3/20= [tex]-\frac{32}{10} - \frac{3}{20} = -\frac{64}{20} - \frac{3}{20} = \frac{61}{20}[/tex]
5,66-(-2i1/4) = 5,66 + 2,25 = 7,91
