Question

1) -1-(-5) = ?

2) 4+(-5) = ?

3) 5-(-7)-9+1-6-(-8)+3+(-20) = ?

4) -(-18)+(-17.12)-(-8.56)+(27.7)+(19.4)+(-4) = ?



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Answer 1

1) +4
2) -1
3) -11
4) +52.54