Answer
$15$
Work Step by Step
The given expression reads: $24-26-29+26+18+29-17-10$
The expression can be rearranged as:
$26-26+29-29+24+18-17-10$
The first four terms can be grouped as $(26-26)$ and $(29-29)$ so that it is easy to see that they cancel out. Thus, the current expression is:
$24+18-17-10$
We may then further group the terms so that they are easier to subtract:
$(24-10)$ and $(18-17)$
This results in:
$14+1 = 15$
