Hello,
It is easy, you can descompose the number to do it easier:
26 | 2
13 | 13
1
26= 2 13
We have 2, so, we have to get 13 with 1, 3 and 4
34 = 12
12+1 = 13
We got it, so the answer is:
2[(34)+1]
Now, the excersice doesn't say that we can't put it together, so I think this can be another answer:
24+3-1=26
