Question

Oblicz
2,5*(8/15-(0,15))+5/24=
0,15*5/6-(0,7*3/7-4/5):(-1 1/2)=

Answer 1

2,5X(8/15-(0,15))+5/24=15/10X(8/15-15/100)+5/24=25/10X(160/300-45/300)+5/24 = 25/10X115/300+5/24=1/2X23/12+5/24= 23/24+5/24=28/24=1 4/24= 1 1/6

0,15X5/6-(0,7X3/7-4/5):(-1 1/2)= 15/100X5/6-(7/10X3/7-4/5):(-3/2)= 5/20X1/2-(1/10X3/1-4/5)X(-2/3)= 5/40-(3/10-4/5)X(-2/3)=5/40-(3/10-8/10)X(-2/3)= 5/40-(-5/10)X(-2/3)=5/40-(-1)X(-1/3)=5/40-1/3=15/120-40/120=-25/120=-5/24