x+9x=20,864
10x=20,864
x= 2,0864
2,0864 x 9 = 18,7776
ответ: 2.0864, 18,7776
x+9x=20,864 x=2,0864; 9×2,0864=18,776 ответ:2,0864; 18,776
x+9x=20,864
10x=20,864
x= 2,0864
2,0864 x 9 = 18,7776
ответ: 2.0864, 18,7776
x+9x=20,864 x=2,0864; 9×2,0864=18,776 ответ:2,0864; 18,776