oblicz : a ) 7 2/3 - 6 2/3 * 0,3 do 2= b) 3,5 * 2/5 + 7/25 : 0,7 bardzo prosze o obliczenia. Daje naj :)

7 2/3 - 6 2/3 * 0,3 do 2= 7 2/3 - 6 2/3 * 0,09 = 7 2/3 - 6 2/3 * 9/100 = = 7 2/3 - 20/3 * 9/100 = 7 2/3 - 9/15 = 7 10/15 - 9/15 = 7 1/15 3,5 * 2/5 + 7/25 : 0,7 =35/10 * 2/5 + 7/25 :7/10 = = 7/5 + 7/25 * 10/7 = 7/5 +2/5 = 9/5 = 1 4/5 = 1,8