Question

What is 1 + 1 + 4 + 6 + 8 + 10 + 20 - -30 + 40 - 45 - -56 + 34=

Answer 1

Explanation:

(1+1+4+6+8+10+20)-(-30+40)-45-(-56+34)= solving bracket

50-(10)-45-(-22)=

Open bracket

50-10-45+22=

50-10-(45+22)=40-67=-27