-3a - (8a-3a) = -3a - 8a + 3a = -8a
-p-p-p-3p-p-p = -3p - 3p = -6p
3-17a-11 (2a-3) = 3 - 17a - 22a + 33 = 3 - 39a + 33 = 36 - 39a
2 1\3 (a+6) - 7 2\3 (3-a) при a=0.7 = 2(7/3) + 12 - 38/3 - 7(2/3) + 21 = 14/3 + 12 - 38/3 - 14 + 21 = -8
-0.25y-8b = -0.25y - 8b
-3a - (8a-3a) = -3a - 8a + 3a = -8a
-p-p-p-3p-p-p = -3p - 3p = -6p
3-17a-11 (2a-3) = 3 - 17a - 22a + 33 = 3 - 39a + 33 = 36 - 39a
2 1\3 (a+6) - 7 2\3 (3-a) при a=0.7 = 2(7/3) + 12 - 38/3 - 7(2/3) + 21 = 14/3 + 12 - 38/3 - 14 + 21 = -8
-0.25y-8b = -0.25y - 8b