А-12=62-27 77-с=55-22 9+х=68-50

Question

А-12=62-27


77-с=55-22

9+х=68-50

Answer 1

A-12=62-27
a=62-27+12
a=47

77-c=55-22
-c=55-22-77
-c=-110
c=110


9+x=68-50
x=68-50-9
x=9