Odpowiedzi

2010-01-29T18:12:35+01:00
A)11 1/4 * ( 1 2/3-1 19/21*0,7)=
11 1/4*(1 2/3-1 1/3)
11 1/4*1/3=3,75

b) 4 1/8 + (1,2-0,65):7 1/3=
4,125+1,55:7 1/3=
4,125+0,075=4,2
2010-01-29T18:16:06+01:00
A)11 ¼ * ( 1⅔-1 i 19/21*0,7)=45/4 *(5/3-40/21 *7/10)=45/4*(5/3-4/3)=45/4*1/3=15/4=3 ¾


b) 4⅛ + (1,2-0,65):7 i 1/3= 33/8 +(6/5-13/20) :7⅓=33/8+(24/20-13/20) :22/3 =33/8 +11/20 :22/3 =33/8 + 3/40 = 165/40+3/40=169/40=4 i 9/40
2010-01-29T21:35:25+01:00
A)11 i 1/4 * ( 1 i 2/3-1 i 19/21*0,7)= 11 i 1/4 * (1 i 2/3-1 i 1/3) = 11 i 1/4 * 1/3 = 3,75

b) 4 i 1/8 + (1,2-0,65):7 i 1/3= 4,125 + 1,55 : 7 i 1/34,125 + 0,075 = 4,2