Sagot :
C= 1/3 - 1/3 * 4/7
=1/3-4/21
=7/21-4/21
=3/21
=1/7
D= 14/45 * 27/49
=2/7*3/5
=6/35
E= ( 2/3 - 3/2) : 7/11
=(4/6-9/6)*11/7
=-5/6*11/7
=-55/42
F= (2*3/7) / (5/3-1)
=(6/7)/(5/3-3/3)
=(6/7)/(2/3)
=6/7*3/2
=18/14
=9/7
=1/3-4/21
=7/21-4/21
=3/21
=1/7
D= 14/45 * 27/49
=2/7*3/5
=6/35
E= ( 2/3 - 3/2) : 7/11
=(4/6-9/6)*11/7
=-5/6*11/7
=-55/42
F= (2*3/7) / (5/3-1)
=(6/7)/(5/3-3/3)
=(6/7)/(2/3)
=6/7*3/2
=18/14
=9/7
C= 1/3 - 1/3 * 4/7 = 1/3 - 4/21 = 3/21
D= 14/45 * 27/49=2/15*9/7 =2/5 *3/7 =6/35
E= ( 2/3 - 3/2) : 7/11 =( 4/6 - 9/6 ) : 7/11 = -5/6 * 11/7 = -55 / 42
F= 2*3/7 / 5/3-1= 6/7 : 2/3 = 6/7 * 3/2 = 9/7
D= 14/45 * 27/49=2/15*9/7 =2/5 *3/7 =6/35
E= ( 2/3 - 3/2) : 7/11 =( 4/6 - 9/6 ) : 7/11 = -5/6 * 11/7 = -55 / 42
F= 2*3/7 / 5/3-1= 6/7 : 2/3 = 6/7 * 3/2 = 9/7