Respuesta :

Plug in the numbers first (a = 2 and b = 3)
(2+5) - 3/3-4 2(3+3)/2

Remove parenthesis of 2 + 5
2+5 - 3/3-4 + 2 * (3+3)/2

Solve 
2+5 - (-3) + 2 * (3 + 3)/2
2 + 5 - (-3) + 2 * 6/2
2+5 - (-3) + 12/2
2 + 5 - (-3) + 6
2 + 5 + 3 + 6
16 is your answer