Odpowiedzi

2010-01-26T16:40:01+01:00
(3-x)/2+ (5x-1 )/5= (2-x)/5+ x/2 | ∙10
5(3-x) + 2(5x-1) = 5(2-x) + 5x
15 - 5x + 10x - 2 = 10 - 5x + 5x
5x = -3 /:5
x = -3/5
2010-01-26T16:40:44+01:00
(3-x)/2+ (5x-1 )/5= (2-x)/5+ x/2 | ∙10


15-5x+10x-2=4-2x+5x
5x+2x-5x=4-15+2
2x=9
x=4,5
2010-01-26T17:53:44+01:00
(3 - x) /2 + (5x - 1)/5 = (2 - x)/5+ x/2 | ∙10
5(3 - x) + 2(5x - 1) = 5(2 - x) + 5x
15 - 5x + 10x - 2 = 10 - 5x + 5x
5x = -3 /:5
x = -3/5