а) x + 23 = 50;
б) 8 + z = 17;
в) u − 25 = 0;
г) x − 31 = 12;
д) t − 20 = −5;
е) x + 30 = −14;
ж) t − 7 = −16;
з) 2 + z = 0;
и) u − 4 = −4.
x + 23 = 50
x = 50 − 23
x = 27
8 + z = 17
z = 17 − 8
z = 9
u − 25 = 0
u = 0 + 25
u = 25
x − 31 = 12
x = 12 + 31
x = 43
t − 20 = −5
t = − 5 + 20
t = 15
x + 30 = −14
x = −14 − 30
x = −44
t − 7 = −16
t = −16 + 7
t = −9
2 + z = 0
z = 0 − 2
z = −2
u − 4 = −4
u = −4 + 4
u = 0
