Respuesta :

Answer:55

Explanation:

Answer:

The answer is 55

Explanation:

I used bracketing to answer this.

I combine the numbers together in brackets like for example,

(1+2+3+4)+(5+6)+(7+8)+(9+10) then

(10+11)+(15+19) then

21+34=55

You can use the bracketing however you like!