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3 5/6 : …........ = 2 cale ½
…..... : 3 = 7calych 7/9
3⅚: ... =2½
3⅚=2½· ...
... =3⅚:2½=23/6:5/2=23/6·2/5=46/30=1¹⁶/₃₀=1⁸/₁₅
3⅚:1⁸/₁₅=2½
... :3=7⁷/₉
... =7⁷/₉·3=23¹/₃
23¹/₃:3=7⁷/₉
........... zastąpie x
3 5/6 : x = 2 1/2
23/6 : x = 5/2 /*x
5/2x = 23/6 /*2/5
x = 23/6 * 2/5
x = 23/15
x = 1 8/15
x : 3 = 7 7/9
x : 3 = 70/9 /*3
x = 70/3
x =23 1/3
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3⅚: ... =2½
3⅚=2½· ...
... =3⅚:2½=23/6:5/2=23/6·2/5=46/30=1¹⁶/₃₀=1⁸/₁₅
3⅚:1⁸/₁₅=2½
... :3=7⁷/₉
... =7⁷/₉·3=23¹/₃
23¹/₃:3=7⁷/₉
........... zastąpie x
3 5/6 : x = 2 1/2
23/6 : x = 5/2 /*x
5/2x = 23/6 /*2/5
x = 23/6 * 2/5
x = 23/15
x = 1 8/15
x : 3 = 7 7/9
x : 3 = 70/9 /*3
x = 70/3
x =23 1/3