Matematyka

Autorzy:Krystyna Zarzycka, Piotr Zarzycki

Wydawnictwo:GWO

Rok wydania:2014

Oblicz. 4.63 gwiazdek na podstawie 8 opinii
  1. Szkoła podstawowa
  2. 6 Klasa
  3. Matematyka

a)

`(6+12)/6 * (-2) = 18/6 *(-2) = -3*2 = -6`

`(-8+20)/2 *(-3) = (20-8)/2 *(-3) = 12/2 * (-3) = -6*3 = -18`

b)

`(-10+16)/(-3) : (-1) = (16-10)/(-3) :(-1) = -6/3: (-1) = -2:(-1) = 2:1=2`

`(-7-5)/(-2) :3 = (-(7+5))/(-2) :3 = (-12)/(-2) :3 = 12/2 :3 = 6:3=2 `

c) 

`(-12+10)/2 + (-6+3)/3 = (-(12-10))/2 + (-(6-3))/3=` `-2/2 + (-3/3) = -1-1 = =(1+1) = -2`

`(-12-6+(-8) -(-4))/(-3-2) = (-(12+6) - 8+4)/(-(3+2)) = ` `(-18-8+4)/(-5) = (-(18+8)+4)/(-5) = (-26+4)/(-5) = (-(26-4))/(-5) ` `= (-22)/(-5) = 22/5 = 4 2/5`