Question

Уровниние..............​

Answer 1

1) x=90-27
x= 63

2) a=63-39
a= 24

3) c=53+27
c= 80

Answer 2

Х+27=90
Х=90-27
Х=63

63-а=39
а=39-63
а=-24


С-27=53
С=53+27
С=80.