Question

Calcule e simplifique o resultado, a) 4/5 + 1/2 - 5/8 b) 1/2 + 1/4 - 1/8 c) 1 1/2 + 2 - 9/10 URGENTE

Answer 1

Olá.

(A) 4/5 + 1/2 - 5/8.

$\mathtt{\dfrac{4}{5} + \dfrac{1}{2} - \dfrac{5}{8} = \dfrac{32 +20 - 25}{40} = \boxed{\mathtt{\dfrac{27}{40}}}}$

Resposta: 27/40.

(B) 1/2 + 1/4 - 1/8.

$\mathtt{\dfrac{1}{2} + \dfrac{1}{4} - \dfrac{1}{8} = \dfrac{4+ 2 - 1}{8} = \boxed{\mathtt{\dfrac{5}{8}}}}$

Resposta: 5/8.

(C) 1 1/2 + 2 - 9/10.

$\mathtt{1\dfrac{1}{2} + \dfrac{2}{1} - \dfrac{9}{10} = \dfrac{2}{2} + \dfrac{2}{1} - \dfrac{9}{10} = \dfrac{10+ 20 - 9}{10} = \boxed{\mathtt{\dfrac{21}{10}}}}$

Resposta: 21/10.

Espero ter ajudado, bons estudos!