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a / b = 3 / 2
3a + b = 27
3a=2b
b=27-3a
3a=2(27-3a)
3a=54-6a
9a=54
a=6
3a=2b |:2
b=3a/2
b=9
Mam nadzieję, że pomogłam i liczę na naj;))
a/b = 3/2 dla b≠0
b = 27-3a
3b =2a
3(27-3a)=2a
81-9a=2a
81=11a /:11
a=⁸¹/₁₁
b = 27-3a
b = 27-3*⁸¹/₁₁
b=27- ²⁴³/₁₁
b=²⁹⁷/₁₁ - ²⁴³/₁₁
b=⁵⁴/₁₁
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3a + b = 27
b/a = 3/2 dla a≠0
b = 27-3a
3a =2b
3a=2(27-3a)
3a=54-6a
9a=54 /:9
a=6
b = 27-3a
b = 27-3*6
b = 27-18
b=9