Matemáticas, pregunta formulada por akane1662, hace 3 meses

ayuda por favor es para mañana
doy 100 puntos​

Adjuntos:

Respuestas a la pregunta

Contestado por juanmar0
1

Explicación paso a paso:

1.

 \frac{3}{9}  +  \frac{5}{9}  =  \frac{3 + 5}{9}  =  \frac{8}{9}

 \frac{6}{8}  \times  \frac{3}{4}  =  \frac{6 \times 3}{8 \times 4}  =  \frac{18}{32}  =  \frac{9}{16}

2.

\frac{5}{6}  +  \frac{1}{3}  =  \frac{(5 \times 3) + (1 \times 6)}{18}  =  \frac{15 + 6}{18}  =  \frac{21}{18}  =  \frac{7}{6}

\frac{5}{7}  \div  \frac{5}{3}  =  \frac{ \frac{5}{7} }{ \frac{5}{3} }  =  \frac{5 \times 3}{7 \times 5}  =  \frac{15}{35}  =  \frac{3}{7}

3.

\frac{7}{9}  \div  \frac{2}{6}  =  \frac{ \frac{7}{9} }{ \frac{2}{6} }  =  \frac{7 \times 6}{9 \times 2}  =  \frac{42}{18}  =  \frac{21}{9} =  \frac{7}{3}

 \frac{5}{3}  +  \frac{2}{3}  =  \frac{5 + 2}{3}  =  \frac{7}{3}</p><p>

4.

 \frac{2}{3}  +  \frac{3}{5}  =  \frac{(2 \times5 ) + (3 \times 3)}{15}  =  \frac{10 + 9}{15}  =  \frac{19}{15}

\frac{4}{8}  -  \frac{2}{6}  =  \frac{(4 \times 6) - (2 \times 8)}{48}  =  \frac{24 - 16}{48}  =  \frac{8}{48}  =  \frac{4}{24}  =  \frac{2}{12}  =  \frac{1}{6}

5.

 \frac{6}{7}  \times  \frac{1}{3}  =  \frac{6 \times 1}{7 \times 3}   = \frac{6}{21}  =  \frac{2}{7}

 \frac{3}{9}  \times  \frac{1}{3}  =  \frac{3 \times 1}{9 \times 3}  =  \frac{3}{27}  =  \frac{1}{9}

6.

 \frac{3}{9}   +  \frac{2}{5}  =  \frac{(3 \times 5) + (2 \times 9)}{45}  =  \frac{15 + 18}{45}  =  \frac{33}{45}  =  \frac{11}{15}

 \frac{16}{20}  -  \frac{10}{20} =   \frac{16 - 10}{20}   = \frac{6}{20} =  \frac{3}{10}

7.

 \frac{3}{8}  +  \frac{2}{3}  =  \frac{(3 \times 3) + (2 \times 8)}{24}  =  \frac{9 + 16}{24}  =  \frac{25}{24}

 \frac{3}{6}  -  \frac{4}{9}  =  \frac{(3 \times 9) - (4 \times 6) }{54}  =  \frac{27 - 24}{54}  =  \frac{3}{54}  =  \frac{1}{18}

8.

 \frac{9}{10}  \times  \frac{3}{6}  =  \frac{27}{60}  =  \frac{9}{20}

 \frac{6}{8}  \div  \frac{1}{4}  =  \frac{ \frac{6}{8} }{ \frac{1}{4} }  =  \frac{6 \times 4}{8 \times 1}  =  \frac{24}{8}  =  \frac{12}{4}  =  \frac{6}{2}  =  \frac{3}{1}

9.

 \frac{4}{7}  +  \frac{2}{7}  =  \frac{4 + 2}{7}  =  \frac{6}{7}

 \frac{2}{6}  +  \frac{3}{8}  =  \frac{(2 \times 8) + (3 \times 6)}{48}  =  \frac{16 + 18}{48}  =  \frac{34}{48}  =  \frac{17}{24}


juanmar0: Ví que ya te respondieron, de todos modos si necesitabas el desarrollo ahi esta.
juanmar0: Perfecto, ahí esta, suerte.
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