X+12=80, 26-x=20, 85-y=70

Question

X+12=80, 26-x=20, 85-y=70

Answer 1

X+12=80
X=68
68+12=80

26-X=20
X=6
26-6=20

85-Y=70
Y=15
85-15=70

Answer 2

Х+12=80

х=80-12

х=68
_______
68+12=80

      80=80

26-х=20

х=26-20

х=6
________
26-6=20

   20=20

85-у=70

х=85-70

х=15
_______
85-15=70

     70=70