Question

Calculati:
1) 1intreg si 9/15:(-1intreg si 6/10)-(-14/15):(+1 intreg si 1/5)
2) (-5/24)x(7intregi si 1/5)-(-7/12):(2 intregi si 6/18)
Ajutorr!!!! Dau coroana :D

Answer 1

1.
1 intreg 9/15=(1x15+9)/15=24/15=8/5
1 intreg 6/10=(1x10+6)/10=16/10=8/5
1 intreg 1/5=(1x5+1)=6/5

8/5 : (-8/5) + 14/15 : 6/5=
(-1) + 14/15 · 5/6=
(-1)+ 7/9=
(-9+7)/9=
(-2/9)

2.
7 intregi 1/5=(7x5+1)/5=36/5
2 intregi 6/18=(2x18+6)/18=42/18=14/6=7/3
(-5/24) · 36/5 + 7/12 : 7/3=
(-3/2) + 7/12 · 3/7=
(-3/2) + 1/4=
(-3·2+1)/4=
(-5/4)

Answer 2

1)  1 si 9/15 : (- 1 si 6/10) = 24/15 : (-  16/10) = 24/15 * (- 10/16) = - 1
2)  (- 5/24) * 7 si 1/5 - (- 7/12) : ( 2 si 6/18) = - 5/24 * 36/5 - (- 7/12) : (42/18) =
      3/2 - (- 7/12) * 18/42 = 3/2 - (- 1/4) = 3/2 + 1/4 = 6/4 + 1/4 = 7/4