Question

calcule o valor da expressao( 2 1/4 -2/3) x ( 20/8 + 9/6)







o valor

Answer 1

$(\frac{21}{4} - \frac{2}{3} ).( \frac{28}{8}+ \frac{9}{6} ) = \frac{63-8}{12} . \frac{7+3}{2} = \frac{55}{12}. \frac{10}{2}= \frac{55}{12}.5= \frac{275}{60}$