Question

Proszę pilnie o odpowiedź !!!!!

a) 3.5 + (-5,25) =
b) (-1/6) + (-1.4)
c) 7.5 * (1 2/3)
d) (-0.18) : (-1.8)
e) 3.2 * 2 2/3 + (- 2 1/3) : 6/7

Answer 1

a) 3,5+(-5,25)=3,5-5,25=-1,75

b) (-1/6)+(-1,4)=(-1/6)-1,4=(-1/6)-14/10=(-5/30)-42/30=-47/30=-1 17/30

c) 7,5*(1 2/3)=75/10*5/3=25/2=12,5

d) (-0,18):(-1,8)=(-18/100):(-18/10)=(-18/100)*(-10/18)=-1/10

e) 3,2*2 2/3+(-2 1/3):6/7=3,2*2 2/3-2 1/3:6/7=32/10*8/3-7/3:6/7=128-7/3*7/6=128/15-49/18=768/90-245/90=523/90=5 73/90