Zamień ułamki dziesiętne na ułamki zwykłe i oblicz: A) 2/3+0,25=? B) 0,75-3/7=? C) 2⅓:0,28=? D) 2,8*1 3/7=? Byłabym bardzo wdzięczna:-D

A) 2/3+0,25=2/3+25/100=2/3+1/4=11/12 B) 0,75-3/7=75/100-3/7=3/4-3/7=9/28 C) 2⅓:0,28=7/3:28/100=7/3:7/25=25/3=8 1/3 D) 2,8*1 3/7=28/10*10/7=14/5*10/7=4

a) 2/3 + 0,25= = 2/3 + 25/100= = 2/3 + 1/4= = 8/12 + 3/12= = 11/12 b) 0,75 - 3/7= = 75/100 - 3/7= = 3/4 - 3/7= = 21/28 - 12/28= = 9/28 c) 2 i 1/3 : 0,28= = 7/3 : 28/100= = 7/3 : 7/25 = = 7/3 * 25/7= = 1/3 * 25/1= = 25/3= = 8 i 1/3 d) 2,8 * 1 i 3/7= = 2 i 8/10 * 10/7= = 28/10 * 10/7= = 4/1 * 1/1= = 4/1= = 4