Question

{1/2[2/5 - 3/4 (5/8 + 9/7 ) +13]}

Answer 1

ΗΘΙΑ

procedimiento :

[tex]\frac{1}{2} (\frac{2}{5} -\frac{3}{4} (\frac{5}{8} +\frac{9}{7} )+13)[/tex]

[tex]=\frac{1}{2} (\frac{2}{5} -\frac{3}{4} (\frac{107}{56} )+13)[/tex]

[tex]=\frac{1}{2} (\frac{2}{5} -\frac{321}{224} +13)[/tex]

[tex]=\frac{1}{2} (\frac{-1157}{1120} +13)[/tex]

[tex]=\frac{1}{2} (\frac{13403}{1120} )[/tex]

[tex]=\frac{13403}{2240}[/tex]

salu2!!