Question

28 + (45 + х) = 100
(у - 25) + 18 = 40
(70 - х) - 35 = 12
60 -(y + 34) = 5
52 - (19 + х) = 17
х : 12 + 48 = 91
20y - 14у + 7у - 13 = 13
84 - 7у = 28
54х - 27х = 8
90 - y * 12 = 78 рещите плиз