Question

{[40+2x(7-5)]x2-18}:10

Answer 1

{[40+2x(7-5)]x2-18}:10
{[40+2x2]x2-18}:10
{[40+4]x2-18}:10
{44x2-18}:10
{78-18}:10
60:10
6

Answer 2

{[40+2X(7-5)X2-18}:10{[40+2X2X2]-18}:10
{[40+8]-18}:10

{48-18}:10

30:10=3