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(w dzieleniu mnożymy odwrotność 2. liczby)
6% z 15 = 0,06 * 15 = 0,9
(30 - 19⅕) : 0,3 = 10,8 : 0,3 = 36
40% z 36 = 40% * 36 = 14⅖
=21/13*(1 i3/6+2 i5/6):(2 i 4/10 -1 i 8/10)=
=21/13*3 i 8/6:2i6/10=
= 27/13 * 4⅓ : ⅗ =
=27/13 * 13/3 : ⅗ =
= 9 : ⅗ =
=15
6% z 15 = 6/100 * 15 = 0,9
(30 - 19⅕) : 0,3 =
= 10,8 : 0,3 =
= 36
40% z 36 = 40/100* 36 =
=14⅖