Odpowiedzi

2010-03-03T22:00:22+01:00
11/15x + 1/5 = 3 |- 1/5
11/15x= 15/5 - 1/5
11/15x= 14/5 |:11/15
x= 14/5 * 15/11=
x= 42/11
x= 3 i 9/11

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/- kreska ułamkowa
2010-03-03T22:00:53+01:00
11/15x = 3 - 1/5
11/15x = 14/5 /×15/11
x = 42/11
x = 3 i 9/11
2010-03-04T01:55:32+01:00
11/15x + 1/5 = 3
11/15x= 3- 1/5
11/15x= 2 i 4/5
11/15x=14/5 /*15
11x=42 /:11
x=42 11
x=3 i 9/11