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2+3=5 ≠ 30
4+6=10 ≠ 30
6+9=15 ≠ 30
12+18=30 = 30
12:18=¹²/₁₈=⁶/₉=²/₃
Te liczby to 12 i 18 najprawdopodobniej ... ; dd
x + y = 30
x / y = 2/3
x + y = 30
x = 2/3 * y
2/3 * y + y = 30
x = 2/3 * y
5/3 * y = 30
x = 2/3 * y
y = 30 * 3/5 = 18
x = 2/3 * 18 = 12
Odp. Szukane liczby to 12 i 18.
x:y=⅔
x=30-y
(30-y)/y = ⅔ / *y
x=30-y
30-y=⅔y
x=30-y
-y-⅔y=-30
x=30-y
-1⅔y=-30
x=30-y
-5/3y=-30/:(-5/3)
x=30-y
y=-30*(-5/3)
x=30-y
y=50
x=-20
y=50