Question

решите уравнение х-12/х-4=3/5

Answer 1

5 * ( x - 12 ) = 3 * ( x - 4 ) ; 5x - 60 = 3x - 12 ; 5x - 3x = 60 - 12 ; 2x = 48 ; X = 48 : 2 ; X = 24

Answer 2

3(x-4)=5(x-12)
3x-12=5x-60
-2x=-60+12
-2x=-48
x=24