• Matéria: Matemática
  • Autor: cristhinakelitta
  • Perguntado 3 anos atrás

a) 5/9 + 8/9 b) 7/12-5/12 c) 4/3+7/3 d) 7/2-4/3 e) 15/8+10/8 f) 1/4+2/4​

Respostas

respondido por: Anônimo
1

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A)

 \frac{5}{9}  +  \frac{8}{9}  =  \frac{5 + 8}{9}  =  \frac{13}{9}  \\

R) 13/9

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B)

 \frac{7}{12}  -  \frac{5}{12}  =  \frac{7 - 5}{12}  =  \frac{2}{12}  =  \frac{1}{6}  \\

R) 1/6

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C)

 \frac{4}{3}  +  \frac{7}{3}  =  \frac{4 + 7}{3 }  =  \frac{11}{3}  \\

R) 11/3

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D)

 \frac{7}{2}  -  \frac{4}{3}  =  \frac{14}{6}  +  \frac{8}{6}  =  \frac{14 + 8}{6}  =  \frac{22}{6}  =  \frac{11}{3}   \\

R) 11/3

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E)

 \frac{1}{4}  +  \frac{2}{4}  =  \frac{1 + 2}{4}  =  \frac{3}{4 }  \\

R) 3/4

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Att: MarcosPCV

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cristhinakelitta: muito obrigada
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