Question

Dê o valor da expressão: (9/4 + 7/2) + [3/16 .(-10) -7/2] *

Answer 1

$(\frac{9}{4} + \frac{7}{2} )+ (\frac{3}{16}.(-10) - \frac{7}{2})$

$(\frac{9.2+7.4}{4.2} )+ (-\frac{3}{8} .5-\frac{7}{2} )$

$(\frac{46}{8} )+ (-\frac{15}{8} -\frac{7}{2} )$

$\frac{23}{4} +(- \frac{-15.2-7.8}{8.2} )$

$\frac{23}{8} + (-\frac{43}{8} )$

$\frac{23}{4} -\frac{43}{8}$

$\frac{23.8-43.4}{8.4}$

$\frac{12}{32}$

$\frac{3}{8}$