Question

Преобразовать алгебраические выражения:

Answer 1

2. $- 3(5a - 1) + 4a - 2a + 7(5 - 3a) = - 15a + 3 + 4a - 2a + 35 - 21a = - 34a + 38$
3. $8(0.7x - 4) - 2(0.2x - 3) + 39 \\ 5.6x - 32 - 0.4x + 6 + 39 = 5.2x + 13$
4. $4(3 - 2x) + 24x - 2(3 + 2x) = 12 - 8x + 24x - 6 - 4x = 12x + 6$
5. $0.2(5y - 2) - 0.3(2y - 1) - 0.9 = y - 0.4 - 0.6y + 0.3 = 0.4y - 0.1$