1.879457-487957=391500
2.870*450=391500
3.261*1500=391500
4.391500-391500=0
5.391500+0=391500
6.391500-391500=0
√ 1300 - 2 * √ 52 - 12 * √ (1 4/9) + 5 √ (13/4) = 10 * √ 13 - 4 * √13 - 4 * √ 13 +
2,5 * √ 13 = 4,5 * √ 13
1007 и 1010. 1007+1010=2017, 1007+3=1010