Question

calculati a) (-3)+(-7)+(-11)-(-21)+(-3)-(-1)
B) -(-7-9-20)+(-3+11-21)
c) 5*(-6)-4*(-2)+6*(+7)-3*(-15)
d) 100:(-50)*4-(-7)*(-4):(-28)-15°(la puterea 0)
E) -3(la puterea a 3-a)-(-2*2)+1-1-0-(-1)

Answer 1

a) (-3)+(-7)+(-11)-(-21)+(-3)-(-1)= -3 -7-11+21-3+1= -2 B) -(-7-9-20)+(-3+11-21)=7+9+20-3+11-21= 23
c) 5*(-6)-4*(-2)+6*(+7)-3*(-15)= -30 +8+42+45= 65

d) 100:(-50)*4-(-7)*(-4):(-28)-15°(la puterea 0)= -1/2-1 -1=-1/2-2=-5/2
e) -3³-(-2*2)+1-1-0-(-1)= -27+4+1= -22