10x + 14x + x = 100
x(10 + 14 + 1) = 100
x. 25 = 100
x = 100 : 25
x = 4
10x + 14x + x = 100
10x + 14x + 1x = 100
( 10 + 14 + 1 ) x X = 100
25 x X = 100
x = 100 : 25
x = 4
Vậy x = 4
Tk hộ :v
10x + 14x + x = 100
10x + 14x+ 1x = 100
(10+14+1)x = 100
25x = 100
x = 100 : 25
x = 4