6300-n÷12=5470 пж решите
6300 - n : 12 = 5470 n : 12 = 6300 - 5470 n : 12 = 830 n = 830 • 12 n = 9960 ——————- 6300 - 9960:12 = 5470 6300 - 830 = 5470 5470 = 5470