Question

у2-у8=у4-1 зарание спасибо

Answer 1

$frac{y}{2} - frac{y}{8} = frac{y}{4} - 1 \ frac{4y-y}{8} = frac{y}{4} -1 \ frac{3y}{8} = frac{y}{4} -1 \ frac{3y}{8} - frac{y}{4} =-1 \ frac{3y-2y}{8} =-1 \ frac{y}{8} =-1 \ y=-1*8 \ y=-8$