1) 0,4 * (7x - 2) - 1.6 + 1.7x = 0.4 * 7x - 0.4 * 2 - 1.6 + 1.7x = 2.8x - 0.8 - 1.6 + 1.7x = 2.8x + 1.7x - 0.8 - 1.6 = 4.5x - 2.4;
2) (1.2a - 4) + (40 - 4.8a) = 1.2a - 4 + 40 - 4.8a = 1.2a - 4.8a + 40 - 4 = -3.6a + 36.
1) 0,4 * (7x - 2) - 1.6 + 1.7x = 0.4 * 7x - 0.4 * 2 - 1.6 + 1.7x = 2.8x - 0.8 - 1.6 + 1.7x = 2.8x + 1.7x - 0.8 - 1.6 = 4.5x - 2.4;
2) (1.2a - 4) + (40 - 4.8a) = 1.2a - 4 + 40 - 4.8a = 1.2a - 4.8a + 40 - 4 = -3.6a + 36.