Question

quanto e {34+[48:(18-15)*4]-19}

Answer 1

= {34 + [ 48 : (3 x 4)] - 19}

= {34 + [ 48 : 12] - 19}

= {34 + 4 - 19}

= {38 - 19}

= 19

Answer 2

{34+[48:(18-15)*4]-19} ---> 
{34+[48:3*4]-19} ---> 
{34+[48:12]-19} ---> 
{34+4-19} ---> 
{38-19} ---> 
R.: 19