Read the statements and mark them as true (T) or false (F). — Прочитайте высказывания и отметьте их как истинные или ложные. 1 The library is in St Ives Road

№1
а) 5/8у - 3/4 = 2у - 2 2/5
5/8у - 2у = 3/4 - 2 2/5
-1 3/8у = 15/20 - 2 8/20
-1 3/8у = -1 13/20
у = - 1 13/20 : (-1 3/8)
у = -33/20 : (-11/8)
у = -33/20 * (-8/11)
у = 2/5
у = 0,4

б) 5/14у + 12 = 4/21у - 7,5
5/14у - 4/21у = -7,5 - 12
30/84у - 8/84у = -19,5
22/84у = -19 1/2
11/42у = -19 1/2
у = -19 1/2 : 11/42
у = -39/2 * 42/11
у = -819/11
у = 74 5/11

№2
а) (1 2/7 - 1/3х) * 21 = 2
1 2/7 - 1/3х = 2/21
1/3х = 1 2/7 - 2/21
1/3х = 1 6/21 - 2/21
1/3х = 1 4/21
х = 1 4/21 : 1/3
х = 25/21 * 3/1
х = 25/7
х = 3 4/7

б) (3 1/2 - 1/4х) * 8 = 3
3 1/2 - 1/4х = 3/8
1/4х = 3 1/2 - 3/8
1/4х = 3 4/8 - 3/8
1/4х = 3 1/8
х = 3 1/8 : 1/4
х = 25/8 * 4/1
х = 25/2
х = 12,5