zad.1 rozwiąż równania i sprawdź: 2x=5 4a=7 15-x=7 1/3 m-1 5/6=2 2/3 25:b=6 d:4=5 1/2 zad.2. rozwiąż równania bez sprawdzeń 3a+1 3/4= 2 1/5 1 2/3-5c=1 1/4 1/2p:1 3/4=8 Bardzo pilne!daje naj. Uwaga np.3/4 to ułamek trzy czwarte

2x = 5 x = 5/2 spr 2 * 5/2 = 5 5 = 5 4a = 7 a = 7/4 spr 4 * 7/4 = 7 7 = 7 15 - x = 7 - x = 7 - 15 -x = -8 x = 8 spr 15 - 8 = 7 7 = 7 1/3 m - 1 5/6 = 2 2/3 1/3 m = 2 2/3 + 1 5/6 1/3 m = 2 4/6 + 1 5/6 = 3 9/6 = 4 3/6 = 4 1/2 m = 4 1/2: 1/3 = 9/2  * 3 = 27/2 spr 1/3 * 27/2  - 1 5/6 = 2 2/3 27/6 - 1 5/6 = 2 2/3 3 9/6 - 1 5/6 = 2 4/6 2 4/6 = 2 4/6   25:b=6  6b = 25 b = 25/6  spr  25 : 25/6 = 6 25 * 6/25 = 6 6 = 6  d/4 = 5 1/2 d = 5 1/2 * 4 d = 22 spr 22/4 = 5 1/2 5 2/4 = 5 1/2 5 1/2 = 5 1/2 zad 2 3a + 1 3/4 = 2 1/5 3a = 2 1/5 - 1 3/4 3a = 2 4/20 - 1 15/20 3a = 1 24/20 - 1 15/20 3a = 9/20 a = 9/20 : 3 a = 9/20 * 1/3 = 3/20  1 2/3 - 5c = 1 1/4 - 5c = 1 1/4 - 1 2/3 - 5c = 1 3/12 - 1 8/12 = - 5/12 -c = - 5/12 : 5 c = 5/12 * 1/5 c = 1/12  1/2p : 1 3/4 = 8 1/2p : 7/4 = 8 1/2p * 4/7 = 8 4/14p = 8 2/7p = 8 2p = 56 p = 56/2 = 28