3. Oblicz (zapisz wynik w postaci ułamka właściwego lub liczby mieszanej)

[tex]a)~~\frac23+\frac14=\frac8{12}+\frac3{12}=\frac{11}{12}\\\\b)~~\frac59+\frac35=\frac{25}{45}+\frac{27}{45}=\frac{52}{45}=1\frac7{45}\\\\c)~~\frac23+\frac45=\frac{10}{15}+\frac{12}{15}=\frac{22}{15}=1\frac7{15}\\\\d)~~\frac58+\frac37=\frac{35}{56}+\frac{24}{56}=\frac{59}{56}=1\frac3{56}[/tex]

[tex]e)~~1\frac12+2\frac38=1\frac48+2\frac38=3\frac78\\\\f)~~\frac29+1\frac7{27}=\frac6{27}+1\frac7{27}=1\frac{13}{27}\\\\g)~~1\frac56+3\frac19=1\frac{15}{18}+3\frac2{18}=4\frac{17}{18}\\\\h)~~2\frac1{10}+1\frac7{15}=2\frac3{30}+1\frac{14}{30}=3\frac{17}{30}[/tex]

BASETLAGO BASETLAGO · Answer 2

[tex]a) \ \frac{2}{3}+\frac{1}{4} =\frac{8}{12}+\frac{3}{12} = \frac{11}{12}\\\\b) \ \frac{5}{9}+\frac{3}{5}=\frac{25}{45} + \frac{27}{45} = \frac{52}{45} = 1\frac{7}{45}\\\\c) \ \frac{2}{3}+\frac{4}{5} = \frac{10}{15}+\frac{12}{15} = \frac{22}{15} =1\frac{7}{15}\\\\d) \ \frac{5}{8}+\frac{3}{7} = \frac{35}{56} + \frac{24}{56} = \frac{59}{56} = 1\frac{3}{56}[/tex]

[tex]e) \ 1\frac{1}{2}+2\frac{3}{8} = 1\frac{4}{8}+2\frac{3}{8}=3\frac{7}{8}\\\\f) \ \frac{2}{9}+1\frac{7}{27} = \frac{6}{27}+1\frac{7}{27} = 1\frac{13}{27}\\\\g) \ 1\frac{5}{6}+3\frac{1}{9}=1\frac{15}{18}+3\frac{2}{18} = 4\frac{17}{18}\\\\h) \ 2\frac{1}{10}+1\frac{7}{15} = 2\frac{3}{30} + 1\frac{14}{30}=3\frac{17}{30}[/tex]