Сколько будет если -8/9x=8/9
Х=8/9 : (-8/9) х=8/9 * (-9/8) х= -1
8^(9-x)=64^x2^(3(9-x)) = 2^6x 2^(27-3x) = 2^6x 2^27 / 2^3x =2^6x2^27 = 2^6x * 2^3x2^27 = 2^9x27=9xx=3