1) x/7 = 840/2x/7 = 420x = 420 * 7x = 2940
2) x 8 = 960 / 10x 8 = 96x = 96 / 8x = 12
Ответ: x = 2940, x = 12.
1) x/7 = 840/2
x/7 = 420
x = 420 * 7
x = 2940
2) x 8 = 960 / 10
x 8 = 96
x = 96 / 8
x = 12
Ответ: x = 2940, x = 12.