Odpowiedzi

2010-03-03T20:43:53+01:00
7/8x + 3/4x = -2
7/8x + 6/8x = -2
13/8x=-2
13x=-16
x=-16/13
2010-03-03T20:45:05+01:00
7/8x + 3/4x =-2 | *8
7x + 6x = -16
13x = -16 | :13
x = -16/13
2010-03-03T20:45:09+01:00
7/8x + 3/4x = -2
7/8x+6/8x=-2
13/8x=-2
x=-2÷13/8
x=-2*8/13
x=-16/13=-1 3/13