srotchno!! 5*3^х-3*5^х=0
5·3^х – 3·5^х = 0 5·3^х = 3·5^х 3^x/3 = 5^x/5 3^(x-1) = 5^(x-1) Делим всё на 5^(x-1) (3/5)^(x-1) = 1 x - 1 = 0 x = 1