Question

x+23=50 8+z=17 y+16=-18

Answer 1

x+23=50
x=50-23
x=27

8+z=17
z=17-8
z=9

y+16=-18
y=-18-16
y=-34

Answer 2

$x+23=50$
$x=27$
$Otvet:27$
_______________________________
$8+z=17$
$z=9$
$Otvet:9$
____________________________
$y+16=-18$
$y=-34$
$Otvet:-34$