Ile kosztuje poltora cegly jezeli jedna cegla kosztuje 1zl i pol cegly??
x - cena cegly
x = 1zl + 0.5x
x-0.5x=1zl
0.5x=1zl | *2
x = 2zl
cegla kosztuje 2zl
poltora cegly kosztuje 1.5(2zl) = 3zl
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x - cena cegly
x = 1zl + 0.5x
x-0.5x=1zl
0.5x=1zl | *2
x = 2zl
cegla kosztuje 2zl
poltora cegly kosztuje 1.5(2zl) = 3zl