Odpowiedź:
g)
1/2x + 5/16 = 3/8x + 2
1/2x - 3/8x = 2 - 5/16
4/8x - 3/8x = 1 11/16
1/8x = 27/16 /*8
x = 27/16 * 8 = 27/2 = 13 1/2
h)
2/7x + 1 5/7 = 4/7x + 3/14
2/7x - 4/7x = 3/14 - 1 5/7
-2/7x = 3/14 - 1 10/14 /*(-7/2)
x = -1 7/14 * (-7/2) = 21/14 * 7/2 = 3/2 * 7/2 = 21/4 = 5 1/4
i)
1 4/7x + 1/21 = 6/7x + 2 5/7
11/7x - 6/7x = 2 5/7 - 1/21
5/7x = 2 15/21 - 1/21 /*7/5
x = 2 14/21 * 7/5 = 2 2/3 * 7/5 = 8/3 * 7/5 = 56/15 = 3 11/15
Szczegółowe wyjaśnienie:
