Question

Efetue as fraçoes
A) (9/2) (3/7 + 4
b) 0,233... + (4/3)
c) 5-0,177...+10
pfv me expliquem

Answer 1

Resposta:

Explicação passo a passo:

b

0,2333..

x=0,2333..

10x=2,3333...

100x=23,333...

100x-10x=23,333...-2,333...

90x=21

x=21/90 [simplifica por 3]

x=7/30

0,2333.... +4/3=

7/30+4/3=

7/30+40/30=

47/30

c

0,177...

x=0,1777..

10x=1,777...

100x=17,777...

100x-10x=17,777...-1,7777...

90x=16

x=16/90 [simplifica por 2]

x=8/45

5-0,1777...+10=

5-8/45+10=

225/45-8/45+450/45=

217/45+450/45=

667/45