a) x - 45 .27 = 0 b)23 . 42 - x = 23
x - 1215 = 0 966 - x = 23
x = 0 + 1215 x = 966 - 23
x =1215 x = 943
a) x - 45.27 = 0
=> x - 1215 = 0
=> x = 1215
b) 23.42 - x = 23
=> 23.42 - 23 = x
=> 23.(42-1) = x
=> 23.41 = x
=> 943 = x.
a) x - 45 . 27 = 0
x - 45 = 0 : 27
x - 45 = 0
x = 0 + 45
x = 45
Vậy x = 45
b) 23 . 24 - x = 23
24 - x = 23 : 23
24 - x = 0
x = 24 - 0
x = 24
Vậy x = 24
a)x-45.27=0
x-1215=0
x=0+1215
x=1215
b)23 . 42-x=23
966-x=23
x=966-23
x=943