Question

Calculați: a) -4+2-(-8)+(-5) b) 3-(-7)-(-5)+(-10) c) -2+(-3)-(-4)-(-5)) d) 3-(-5)+(-2)+(-3)-(-7)+1 e) 10+(-6)-(-10)-(-6) f) -22-(-21)+(-20)

Answer 1

  a) -4+2-(-8)+(-5)=-4+2+8-5=9
b)3-(-7)-(-5)+(-10)=3+7+5-10=5
c)-2+(-3)-(-4)-(-5)=-2-3+4+5=4
d)3-(-5)+(-2)+(-3)-(-7)+1=3+5-2-3+7+1=11
e)10+(-6)-(-10)-(-6)=10-6+10+6=20
f)-22-(-21)+(-20)=-22+21-20=-21