Explicación paso a paso:
La suma o resta de fracciones es una de las operaciones básicas que permite combinar dos o más fracciones
1) 3/5 + 6/15 - 3/10=
[tex]\frac{3}{5} + \frac{6}{14}- \frac{3}{10}=\frac{(3)(14) +(6)(5) -(3)(7) }{70} =\frac{42+30-21}{70} =\frac{51}{70}[/tex]
2) 2/3 + 3/4 - 1/2 =
[tex]\frac{2}{3} + \frac{3}{4}- \frac{1}{2}=\frac{(2)(4) +(3)(3) -(1)(6) }{12} =\frac{8+9-6}{12} =\frac{11}{12}[/tex]
3) 5/8 - 2/9 + 1/4
[tex]\frac{5}{8} - \frac{2}{9}+ \frac{1}{4}=\frac{(5)(9) -(2)(8) +(1)(18) }{72} =\frac{45-16+18}{72} =\frac{47}{72}[/tex]
Respuesta:
[tex] \frac{3}{5} + \frac{6}{15} - \frac{3}{10} = \frac{7}{10} [/tex]
[tex] \frac{2}{3} + \frac{3}{4} - \frac{1}{2} = \frac{11}{12} [/tex]
[tex] \frac{5}{8} - \frac{2}{9} + \frac{1}{4} = \frac{47}{72} [/tex]
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Verified answer
Explicación paso a paso:
La suma o resta de fracciones es una de las operaciones básicas que permite combinar dos o más fracciones
1) 3/5 + 6/15 - 3/10=
[tex]\frac{3}{5} + \frac{6}{14}- \frac{3}{10}=\frac{(3)(14) +(6)(5) -(3)(7) }{70} =\frac{42+30-21}{70} =\frac{51}{70}[/tex]
2) 2/3 + 3/4 - 1/2 =
[tex]\frac{2}{3} + \frac{3}{4}- \frac{1}{2}=\frac{(2)(4) +(3)(3) -(1)(6) }{12} =\frac{8+9-6}{12} =\frac{11}{12}[/tex]
3) 5/8 - 2/9 + 1/4
[tex]\frac{5}{8} - \frac{2}{9}+ \frac{1}{4}=\frac{(5)(9) -(2)(8) +(1)(18) }{72} =\frac{45-16+18}{72} =\frac{47}{72}[/tex]
Respuesta:
[tex] \frac{3}{5} + \frac{6}{15} - \frac{3}{10} = \frac{7}{10} [/tex]
[tex] \frac{2}{3} + \frac{3}{4} - \frac{1}{2} = \frac{11}{12} [/tex]
[tex] \frac{5}{8} - \frac{2}{9} + \frac{1}{4} = \frac{47}{72} [/tex]