Question

Qual o valor dessa expressão?

Answer 1

$\frac{4}{7} . \sqrt{ \frac{49}{64} } +(1- \frac{3}{5} ): \frac{3}{5} +(1+ \frac{1}{3} )= \\ \\ = \frac{4}{7} . \frac{ \sqrt{49} }{ \sqrt{64} } } +( \frac{5-3}{5} ).\frac{5}{3} +( \frac{3+1}{3} )= \\ \\ = \frac{4}{7} . \frac{ 7 }{ 8 } } +( \frac{2}{5} ).\frac{5}{3} +( \frac{4}{3} )= \\ \\= \frac{1}{2} + \frac{2}{3} + \frac{4}{3} = \\ \\ = \frac{1}{2} + \frac{6}{3} = \\ \\ = \frac{1}{2} +2= \\ \\ = \frac{1+4}{2} = \frac{5}{2} =2,5$

letra b)