Odpowiedzi

2010-03-09T18:58:45+01:00
X-3/4x-1/5x=4
x-15/20x-4/20x=4
x-19/20x=4
1/20x=4/*20
x=80
2 2 2
2010-03-09T19:01:38+01:00
4= x - ¾x - ¹/₅x

4=x-¹⁵/₂₀x-⁴/₂₀x

4=x-¹⁹/₂₀x

4=¹/₂₀x
4*20=x
x=80
2 2 2