A. ( x - 34 ) . 15 = 0
x - 34 = 0
x = 0 + 34
x = 34
Vậy x = 34
B. 18 ( x - 16 ) = 18
x - 16 = 18 : 18
x - 16 = 1
x = 1 + 16
x = 17
Vậy x = 17
A. ( x - 34 ) . 15 = 0
x - 34 = 0 . 15
x - 34 = 0
x = 34
B . 18 . ( x - 16 ) = 18
x - 16 = 18 : 18
x - 16 = 1
x = 17
a) ( x - 34 ) . 15 = 0
=> x - 34 = 0
=> x = 34
b) 18( x - 16 ) = 18
=> x - 16 = 1
=> x = 17