Question

3-{2+(11-15)-[5+(-3+1)]+8}

Answer 1

3-{2+(11-15)-[5+(-3+1)]+8}
3-{2+(-4)-[5+(-2)]+8}
3-{2-4-[5-2]+8}
3-{2-4-3+8}
3-{2-7+8}
3-{2+1}
3-3
0