Степінь

6

2

8

3

20,2

20,6

20,7

25

2p + 5

2p + 1

p

2p - 1

5x - (2x - ((y - x) - 2y)) = 5x - (2x - (y - x - 2y)) = 5x - (2x - (-x - y)) = 5x - (2x + x + y) = 5x - (3x + y) = 5x - 3x - y = 2x - y

2/3(6a - 3/8b) - 2/11(4 1/8a - 33b) = 2/3 * 6a - 2/3 * 3/8b - 2/11 * 4 1/8a + 2/11 * 33b = 4a - 1/4b - 3/4a + 6b = 4 1/5ba 2 3/3a

-2/9(2,7m - 1,5n) + 5/6(2n - 0,48) = -2/9 * 2,7m + 2/9 * 1,5n + 5/6 * 2n - 5/6 * 0,48m = -0,6m + 1/3n + 5/3n - 4m = -4,6m + 2n

x - (x - (2x - 3)) = x - (x - 2x + 3) = x - x + 2x - 3 = 2x + 3