Question

Найдите корень уравнения:1) 9(х-1)=х+15; 2) (11х+14)-(5х-8)=25

Answer 1

1) 9(x-1) = x+15
 9x-9= x + 15
 8x=24
 x=3
2) (11x+14)-(5x-8) = 25
11x-5x=-8+25-14
6x=3
x= 3/6 = 1/2