Question

[(3+5x8-48:4)-(2x7+5-78:6)-4]:7

Answer 1

[(3+5X8-12)-(2X7+5-13)-4]:7=[(3+40-12)-(14+5-13)-4]:7=[(31-6)-4]:7=(25-4):7=21:7=3

Answer 2

$[(3+5*8-48:4)-(2*7+5-78:6)-4]:7=$
$[(3+40-12)-(14+5-13)-4]:7=$
$(31-6-4):7=$
$21:7=3$