Question

Спростити вираз:
1. (a-3)+6; 2.(x-3)-(2x+5);
3.1,6(9a-3b)-(4b-ba)•1,5

Answer 1

1. (a-3) + 6 = a - 3 + 6 = a + 3

2. (x-3) - (2x+5) = x - 3 - 2x - 5 = (x - 2x) + (-3 - 5) = -x - 8

3. 1.6(9a-3b) - (4b-ba) * 1.5 = 1.6 * (9a - 3b) - (4b - ba) * 1.5 = 14.4a - 4.8b - 6b + 1.5ba = 14.4a + 1.5ba - 10.8b