Oblicz : x-1½-1⅓x-2+¹/₄x-⅚= x₊5 + 2x₊5 2₋x ---- ---- = ---- 10 2 5 x*1 1*2 2x-5 --- - --- = ----- 5 2 6 7(2-5x) - (11-8x) < 3 3x-7 6-x ----- ≥ ---- 2 5

Oblicz : x-1½-1⅓x-2+¹/₄x-⅚= x₊5 + 2x₊5 2₋x ---- ---- = ---- 10 2 5 x*1 1*2 2x-5 --- - --- = ----- 5 2 6 7(2-5x) - (11-8x) < 3 3x-7 6-x ----- ≥ ---- 2 5
Odpowiedź

x- 1½ - 1⅓x - 2+ 1/4x - 5/6= 3/4x - 4/3x - 3 i 1/2 - 5/6 = 9/12x - 16/12x - 7/2 - 5/6 = -7/12x - 21/6 - 5/6 = -7/12x - 26/6 x + 5/ 10 + 2x+5/2 = 2-x/5 x + 5/ 10 + 10x + 25/10 = 4 - 2x/10 11x + 30/ 10 = 4 - 2x/10 13x + 26/10 (x + 5/ 10 , x + 5 w liczniku, 10 w mianowniku) x*1/ 5 - 1*2/2 = 2x -5/6 x/5 - 1 = 2x - 5/6 6x/30 - 30/30 - 10x - 25/30 = 0 -4x - 5/30 = 0 7(2-5x) - (11-8x) < 3 14 - 35x - 11 + 8x - 3< 0 -27x < 0 3x - 7/ 2 ≥ 6 -x/5 15x - 35/10 ≥ 12 -2x/10 17x - 23/10

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