Question

Soma das fraçoes 1/2 1/3 e 1/9

Answer 1

❑ Para resolver uma soma de frações, devemos igualar a base delas para depois somar.

$\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{1}{9}$

➯ O m.m.c(Menor múltiplo comum) de 2, 3 e 9 é 18. Vamos igualar as bases:

$\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{1}{9}\\\\\\\dfrac{9\cdot1}{2\cdot9}+\dfrac{6\cdot1}{3\cdot6}+\dfrac{2\cdot1}{9\cdot2}\\\\\\\dfrac{9}{18}+\dfrac{6}{18}+\dfrac{2}{18}\\\\\\\dfrac{1}{18}(9+6+2)\\\\\\\dfrac{1}{18}(17)\\\\\\ \dfrac{17}{18}$

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