Odpowiedzi

2010-02-09T15:32:05+01:00
A/b = 4/3
a-b=28

a = 28+b

(28+b)/b = 4/3

4b = 3(28+b)
4b = 84 +3b
b = 84

a = 28+84 = 112
2010-02-09T15:35:29+01:00
A ÷ b = 4 ÷ 3 /×b
a - b = 28

a = 4b ÷ 3
4b ÷ 3 - b = 28 /×3

a = 4b ÷ 3
4b - 3b = 84

a = 4b ÷ 3
b = 84

a = 112
b = 84