Question

11. Oblicz.

a) 11+(-12)+39+9-8

b) 45+(-9)+(-91)+5

c) -4 i 1/2 + 1/6+(-1/2)+1 i 1/3 ( /- kreska ulamkowa :D)

d)6,25+(-1/4)+(-3/5)+0,75

e) 4/7+(-3/14)+1/14

f) 1/2+(-3/4)+(-5/8)

g) 5 i 2/3 + (-3 i 4/5)+1/3+(-1/5)

Answer 1

A.11+(-12)+39+9-8 =-1+48-8=47-8=39

B.45+(-9)+(-91)+5 = 36+(-86)=(-50)

C.-4 i 1/2 + 1/6+(-1/2)+1 i 1/3=(-27/6)+1/6+(-3/6)+8/6=(-21/6)=(-7/2)=(-3i1/2)

D.6,25+(-1/4)+(-3/5)+0,75=6.25+(-0.25)+(-0.6)+0.75=6+0.15=6.15

E.4/7+(-3/14)+1/14=8/14+(-2/14)=6/14=3/7

F.1/2+(-3/4)+(-5/8)=4/8+(-6/8)+(-5/8)=(-2/8)+(-5/8)=(-7/8)

G.5 i 2/3 + (-3 i 4/5)+1/3+(-1/5)=17/3+(-19/5)+1/3+(-1/5)=18/3-20/5=6-4=2