Respostas

  • Usuário do Brainly
2014-06-12T20:15:56-03:00
reduza as fraçoesao mesmo denominador
a)2/5+3/10
b)2/3+7/6
c)2/9+3/4
d)3 1/2+4/5


a)2/5+3/10
 \frac{2}{5} + \frac{3}{10} =  \frac{4+3}{10} = \frac{7}{10}


b)2/3+7/6
 \frac{2}{3} + \frac{7}{6}=  \frac{4+7}{6}  = \frac{11}{6}


c)2/9+3/4
 \frac{2}{9}+ \frac{3}{4} =  \frac{8+27}{36}= \frac{35}{36}


d)3 1/2+4/5
 \frac {7}{2} + \frac{4}{5} =   \frac{35+8}{10} = \frac{43}{10}