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{5}{4} + \frac{3}{7}+ \frac{2}{6}=\frac{(5)(21) +(3)(12) +(2)(14) }{84} =\frac{105+36+28}{84} =\frac{169}{84}[/tex]
2)
[tex]\frac{7}{2} + \frac{4}{8}- \frac{3}{4}=\frac{(7)(4) +(4)(1) -(3)(2) }{8} =\frac{28+4-6}{8} =\frac{26}{8} =\frac{13}{4}[/tex]
3)
[tex]\frac{2}{5} + \frac{5}{10}+ \frac{4}{20}=\frac{(2)(4) +(5)(2) +(4)(1) }{20} =\frac{8+10+4}{20} =\frac{22}{20} =\frac{11}{10}[/tex]
4)
[tex]\frac{4}{3} - \frac{3}{10}+ \frac{7}{5}=\frac{(4)(10) -(3)(3) +(7)(6) }{30} =\frac{40-9+42}{30} =\frac{73}{30}[/tex]
5)
[tex]\frac{3}{9} - \frac{8}{18}- \frac{4}{2}=\frac{(3)(2) -(8)(1) -(4)(9) }{18} =\frac{6-8-36}{18} =\frac{-38}{18} =\frac{-19}{9}[/tex]
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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{5}{4} + \frac{3}{7}+ \frac{2}{6}=\frac{(5)(21) +(3)(12) +(2)(14) }{84} =\frac{105+36+28}{84} =\frac{169}{84}[/tex]
2)
[tex]\frac{7}{2} + \frac{4}{8}- \frac{3}{4}=\frac{(7)(4) +(4)(1) -(3)(2) }{8} =\frac{28+4-6}{8} =\frac{26}{8} =\frac{13}{4}[/tex]
3)
[tex]\frac{2}{5} + \frac{5}{10}+ \frac{4}{20}=\frac{(2)(4) +(5)(2) +(4)(1) }{20} =\frac{8+10+4}{20} =\frac{22}{20} =\frac{11}{10}[/tex]
4)
[tex]\frac{4}{3} - \frac{3}{10}+ \frac{7}{5}=\frac{(4)(10) -(3)(3) +(7)(6) }{30} =\frac{40-9+42}{30} =\frac{73}{30}[/tex]
5)
[tex]\frac{3}{9} - \frac{8}{18}- \frac{4}{2}=\frac{(3)(2) -(8)(1) -(4)(9) }{18} =\frac{6-8-36}{18} =\frac{-38}{18} =\frac{-19}{9}[/tex]