Prosze szybko zadanie temat dodawanie i odejmowanie ułamków o różnych mianownikach 10-(2¹/9-½+1 5/6)= (4⅓-2 2/5)-(6³/5-5⅔)=

10 - (2 i 1/9 - 1/2 +1 i 5/6) = 10 -(2 i 2/18 - 9/18 +1 i 15/18) = = 10 -(1 i 20/18 - 9/18 +1 i 15/18) = 10 -(1 i 11/18 +1 i 15/18) = = 10 - 2 i 26/18 = 10 - 3 i 8/18 = 10 - 3 i 4/9 = 9 i 9/9 - 3 i 4/9 = 6 i 5/9 (4 i 1/3 - 2 i 2/5) - (6 i 3/5 - 5 i 2/3) = (4 i 5/15 - 2 i 6/15) - (6 i 9/15 - 5 i 10/15) = = (3 i 20/15 - 2 i 6/15) - (5 i 24/15 - 5 i 10/15) = 1 i 14/15 - 14/15 = 1

10 - (2 i 1/9 - 1/2 + 1 i 5/6 = 10 - (2 i 2/18 - 9/18 + 1 i 15/18) = 10 - (1 i 20/18 - 9/18 + 1 i 15/18) = 10 - (1 i 11/18 + 1 i 15/18) = 10 - 2 i 26/18 = 9 i 18/18 - 2 i 26/18 = 8 i 36/18 - 2 i 26/18 = 6 i 10/18 = 6 i 5/9 (4 i 1/3 - 2 i 2/5 ) - (6 i 3/5 - 5 i 2/3) = ( 4 i 5/15 - 2 i 6/15) - (6 i 9/15 - 5 i 10/15) = (3 i 20/15 - 2 i 6/15) - ( 5 i 24/15 - 5 i 10/15) = 1 i 14/15 - 14/15 = 1