Respuesta :

Lianaca

Answer:

17

Step-by-step explanation:

You just do the step by step and add then subtract and so forth until you get 1 number.

AanchalR

Answer:

20 - 4 + 2 x 1 - 4 + 3

= 20 - 4 + 2 - 4 + 3

= 16 + 2 - 4 + 3

= 18 - 4 + 3

= 14 + 3

= 17