Odpowiedzi

2010-04-14T19:49:09+02:00
1.2x-(-4 - 3x) = 2x+4+3x = 5x+4

2. (a-10) : 5 = a/5-2

3. 9x - 7y - 3 : 3 = 9x-7y-1

4. (-4z - 2t) : ½ = -8z-4t

5. (4w - 2 + 3u) : ( -1 ⅓) = (4w - 2 + 3u) : (-4/3) = (4w - 2 + 3u) * (-3/4) = -3+3/2-9/4 = -12/4+6/4-9/4 = -15/4 = -3¾

6. 0,6 + 10y - 1 : -0,2 = 0,6+10y+5 = 10y+5,6