[tex] \frac{3}{7} + \frac{2}{5} = \frac{3 \div 5 +7 \div 2 }{7 \div 5} = \frac{15 + 14}{35} = \frac{29}{35} [/tex]
[tex]\frac{5}{2} + \frac{8}{3} + \frac{11}{4} = \frac{95}{12} [/tex]
[tex]( - \frac{5}{8}) + ( - \frac{1}{3}) = \frac{( - 5 \times 3) + (1 \times 8}{8 \times 3} = \frac{( - 15) + ( - 8)}{24} = \frac{23}{24} [/tex]
[tex] \frac{7}{9} + ( - \frac{4}{3}) = \frac{(7 \times 3) + ( - 4 \times 9)}{9 \times 3} = \frac{21 + ( - 36}{27} = \frac{ - 15}{27 } = - \frac{5}{9} [/tex]
[tex]\frac{13}{5} + \frac{24}{11} = \frac{(13 \times 11) + (24 \times 5)}{5 \times 11} = \frac{143 + 120}{55} = \frac{163}{55} [/tex]
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Ejemplo 1
[tex] \frac{3}{7} + \frac{2}{5} = \frac{3 \div 5 +7 \div 2 }{7 \div 5} = \frac{15 + 14}{35} = \frac{29}{35} [/tex]
Ejemplo 2
[tex]\frac{5}{2} + \frac{8}{3} + \frac{11}{4} = \frac{95}{12} [/tex]
Ejemplo 3
[tex]( - \frac{5}{8}) + ( - \frac{1}{3}) = \frac{( - 5 \times 3) + (1 \times 8}{8 \times 3} = \frac{( - 15) + ( - 8)}{24} = \frac{23}{24} [/tex]
Ejemplo 4
[tex] \frac{7}{9} + ( - \frac{4}{3}) = \frac{(7 \times 3) + ( - 4 \times 9)}{9 \times 3} = \frac{21 + ( - 36}{27} = \frac{ - 15}{27 } = - \frac{5}{9} [/tex]
Ejemplo 5
[tex]\frac{13}{5} + \frac{24}{11} = \frac{(13 \times 11) + (24 \times 5)}{5 \times 11} = \frac{143 + 120}{55} = \frac{163}{55} [/tex]
Espero haberte ayudado
puedes darme coronita pliiiiiis