Ответ:
1) x : 12 = 17
x = 17 × 12
x = 204
2) 561 : x = 11
x = 561 : 11
x = 51
3) 17x - 9x = 672
8x = 672
x = 672 : 8
x = 84
Ответ: 1) x = 204; 2) x = 51; 3) x = 84
1) x : 12 = 17
x = 17 × 12
x = 204
2) 561 : x = 11
x = 561 : 11
x = 51
3) 17x - 9x = 672
8x = 672
x = 672 : 8
x = 84
Ответ: 1) x = 204; 2) x = 51; 3) x = 84