5. ( 12 - x ) = 50
12 - x = 50 : 5
12 - x = 10
x = 12 - 10
x = 2
Vậy x=2
Trả lời câu hỏi xưa
5. ( 12 - x ) - 20 =30
5 . ( 12 - x ) = 30 + 20
5 . ( 12 - x ) = 50
12 - x = 50 : 5
12 - x = 10
x = 12 - 10
x = 2
Vậy x = 2
5. ( 12 - x ) - 20 = 30
5.( 12 -x ) = 30 +20
5. (12 - x) = 50
12 - x= 50 : 5
12 - x = 10
x = 12 - 10
x = 2