Question

15+{8.[45-(30-10:2).5]-3}=

Answer 1

$\sf{segue \: abaixo \: a \: resposta}$

$\sf{15+{8.[45-(30-10:2).5]-3}}$

$\sf{15 + (8(45 - (30 - 5)x5) - 3)}$

$\sf{15 + (8(45 - 25x5) - 3)}$

$\sf{25x5 = 125}$

$\sf{15 + (8(45 - 125) - 3)}$

$\sf{15 + (8x( - 80) - 3)}$

$\sf{8x( - 80) = - 640}$

$\sf{15 + ( - 640 - 3)}$

$\sf{15 +( - 643) }$

$\sf{15 - 643 = }$

$\boxed{\boxed{\sf{ - 628}}}$