Explicación paso a paso:
La suma o resta de fracciones es una de las operaciones básicas que permite combinar dos o más fracciones
1.
[tex]\frac{3}{4} + \frac{2}{8}+ \frac{1}{2}=\frac{(3)(2) +(2)(1) +(1)(4) }{8} =\frac{6+2+4}{8} =\frac{12}{8} =\frac{3}{2}[/tex]
2.
[tex]\frac{2}{7} + \frac{3}{14}+ \frac{2}{4}=\frac{(2)(4) +(3)(2) +(2)(7) }{28} =\frac{8+6+14}{28} =\frac{28}{28} =1[/tex]
3.
[tex]\frac{3}{5} + \frac{2}{3}+ \frac{3}{6}+ \frac{1}{2}=\frac{(3)(6) +(2)(10) +(3)(5) +(1)(15) }{30} =\frac{18+20+15+15}{30} =\frac{68}{30} =\frac{34}{15}[/tex]
4.
[tex]\frac{6}{8} + \frac{3}{4}+ \frac{5}{6}=\frac{(6)(3) +(3)(6) +(5)(4) }{24} =\frac{18+18+20}{24} =\frac{56}{24} =\frac{7}{3}[/tex]
5.
[tex]\frac{3}{4} + \frac{6}{8}+ \frac{4}{5}=\frac{(3)(10) +(6)(5) +(4)(8) }{40} =\frac{30+30+32}{40} =\frac{92}{40} =\frac{23}{10}[/tex]
6.
[tex]\frac{3}{9} + \frac{2}{3}+ \frac{8}{6}=\frac{(3)(2) +(2)(6) +(8)(3) }{18} =\frac{6+12+24}{18} =\frac{42}{18} =\frac{7}{3}[/tex]
