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3x- druga liczba spr ; 3*5=15
3x+2 - trzecia liczba spr; 3*5 + 2 = 17
x + 3x + 3x + 2 = 37
7x + 2 = 37 / -2
7x = 35 / :7
x = 5
35:7=5
5x3=15
15+2=17
Pierwsza liczba to 5, druga to 15 a trzecia to 17
x + y + z = 37
y=3x
z=y+2
x+y+z=37
y=3x
z=3x+2
x+3x+(3x+2)=37
4x+3x+2=37
7x=35
x=5
zatem:
x=5
y=3*5=15
z=15+2=17