8 /9x =0,7 x -17/18 решите уравнение
8/9х=0,7х-17/18 8/9х-0,7х=-17/18 8/9х-7/10х=-17/18 17/90х=-17/18 х=-17/18:17/90 сокращаем дробь х=-5
8/9x-0,7x=-17/18 8/9x-7/10x=-17/18 80/90x-63/90x=-17/18 17/90x=-17/18 x=-17/18÷17/90 x=-5