1) 3x - 7.1x + 5/ + 12 при x = -7
3 * (-7) - 7.1 * (-7) + 5 + 12 = -21 + 49.7 + 5 + 12 = 45.7
2) 7x - 5 / x - 8 / + 11 при x = 6
7 * 6 - 5 / 6 - 8 + 11 = 42 - 5 / 6 + 3 = 44.16
3) 2x + 12. / x + 11 / + 3 при x = -9
2 * (-9) + 12 / -9 + 11 + 3 = -18 + 12 / 2 + 3 = -18 + 6 + 3 = -9
4) 3x - / 12 - 8x / при x = 7
3 * 7 - / 12 - 8 * 7 / = 21 - / 12 - 56 / = 21 - (-44) = 65
5) 4x - 4.15 - x / + 5 при x = 7
4 * 7 - 4.15 - 7 + 5 = 28 - 4.15 - 7 + 5 = 21.85
6) 18x - 6 / + 2.16 - 8x / при x = 4
18 * 4 - 6 + 2.16 - 8 * 4 = 72 - 6 + 2.16 - 32 = 36.16
7) 17x - 9 / + 5.19 - 7x / при x = 3
17 * 3 - 9 + 5.19 - 7 * 3 = 51 - 9 + 5.19 - 21 = 26.19
8) x - 3 - (x - 11) при x = 6
6 - 3 - (6 - 11) = 6 - 3 - (-5) = 3 + 5 = 8
9) x - 3. (x + 2) при x = 5
5 - 3 * (5 + 2) = 5 - 3 * 7 = 5 - 21 = -16
10) 4x - (x + 3) при x = -5
4 * (-5) - (-5 + 3) = -20 - (-2) = -20 + 2 = -18