1) 13y + 244 + 24y - 67 = 37у + 177 = 37 * 25 + 177 = 1102
2) 48m - 13m + 876 = 35m + 876 = 35 * 17 + 876 = 1471
3) 19x + 457 + 39x - 278 = 58x + 179 = 58 * 23 + 179 = 1513
4) 75 + 36m + 27 + 64m = 100m + 102 = 100 * 421 + 102 = 42202
5) 35x + 204 + 66х - 199 = 101x + 5 = 101 * 73 + 5 = 7378
6) 26а + 421 + 74а - 241 = 100a + 180 = 100 * 39 + 180 = 4080