A-12=67-27 77-c=55-22 9+x=68-58

Question

A-12=67-27 77-c=55-22 9+x=68-58

Answer 1

A-12=67-27 А= 12+67-27 А= 52 77-c=55-22 -с= -77+55-22 -с= -44 9+x=68-58 х= -9+68-58 х=1

Answer 2

А-12=67-27
а-12=40
а=40+12
а=52


77-с=55-22
77-с=33
с=77-33
с=44


9+х=68-58
9+х=10
Х=10-9
Х=1