Question

-5+{4+[3-(4-8+(-5-10)]} urge!

Answer 1

-5+(4+(3-(4-8+(-5-10))))
= -5+(4+(3-(4-8+(-15))))
= -5+(4+(3-(-4-15)))
= -5+(4+(3-(-19)))
= -5+(4+(3+19))
= -5+(4+(22))
= -5+26
= 21

Answer 2

-5+{4+[3-(4-8+(-5-10)]} 
-5+{4+[3-(-4-15)]}
-5+{4+[3-(-19)]}
-5+{4+[3+19]}
-5+{4+[22]}
-5+{4+22}
-5+26
21

                                            ................Kd