42+Х = 58+24 36-Х=48-22 Х+19=31

Question

42+Х = 58+24
36-Х=48-22
Х+19=31

Answer 1

42+Х=58+24
Х=58+24-42
Х=40

36-Х=48-22
-Х=48-22+36
-Х=62
Х=-62


Х+19=31
Х=31-19
Х=12