o resultado correto da expressao 2/3+[3/5.(2/3-1/2) e :
A)5/8 B)9/22 C) 5/15 D)23/30
Soluções para a tarefa
Respondido por
88
2/3+[3/5.(2/3-1/2
2+[3.(2-1)]
3 5 3 2 m.m.c de 3 e 2
2+[3(.4-3)]
3 5 6
2+[3.1]
3 5 6
2+3
3 30 m.m.c de 3 e 30
20+3=23
30 30
Alternativa D
2+[3.(2-1)]
3 5 3 2 m.m.c de 3 e 2
2+[3(.4-3)]
3 5 6
2+[3.1]
3 5 6
2+3
3 30 m.m.c de 3 e 30
20+3=23
30 30
Alternativa D
michellycardoso:
Obrigada :D
Respondido por
68
Olá Michelly.
![\frac{2}{3} + [\frac{3}{5} . (\frac{2}{3} - \frac{1}{2})] \\ \\ \frac{2}{3} + [\frac{3}{5} . (\frac{4-3}{6})]\\ \\ \frac{2}{3} + [\frac{3}{5} . (\frac{1}{6})]\\ \\ \frac{2}{3} +\frac{3}{30} = \frac{20+3}{30}= \boxed{\frac{23}{30}}](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B3%7D+%2B+%5B%5Cfrac%7B3%7D%7B5%7D+.+%28%5Cfrac%7B2%7D%7B3%7D+-+%5Cfrac%7B1%7D%7B2%7D%29%5D+%5C%5C+%5C%5C+%5Cfrac%7B2%7D%7B3%7D+%2B+%5B%5Cfrac%7B3%7D%7B5%7D+.+%28%5Cfrac%7B4-3%7D%7B6%7D%29%5D%5C%5C+%5C%5C+%5Cfrac%7B2%7D%7B3%7D+%2B+%5B%5Cfrac%7B3%7D%7B5%7D+.+%28%5Cfrac%7B1%7D%7B6%7D%29%5D%5C%5C+%5C%5C+%5Cfrac%7B2%7D%7B3%7D+%2B%5Cfrac%7B3%7D%7B30%7D+%3D+%5Cfrac%7B20%2B3%7D%7B30%7D%3D+%5Cboxed%7B%5Cfrac%7B23%7D%7B30%7D%7D "\frac{2}{3} + [\frac{3}{5} . (\frac{2}{3} - \frac{1}{2})] \\ \\ \frac{2}{3} + [\frac{3}{5} . (\frac{4-3}{6})]\\ \\ \frac{2}{3} + [\frac{3}{5} . (\frac{1}{6})]\\ \\ \frac{2}{3} +\frac{3}{30} = \frac{20+3}{30}= \boxed{\frac{23}{30}}")
Alternativa D
Alternativa D
Obrigada :)))
Por nada ;D
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