Question

Решите уравнение:
а) ( х + 27 ) - 12 = 42

Answer 1

(x+27)-12=42

x+27=42+12

x+27=54

x=54-27

x=27

Answer 2

(х + 27) - 12 = 42
х+27 =42+12
х+27=57
х=54-27
х=27