Step-by-step explanation:
-4 + 7 = -4 + (4 + 3) = -4 + 4 + 3 = 3
11 - (-10) = 11 + 10 = 21
-4 + -5 = -4 - 5 = -9
-5/2 + 3/4 = -10/4 + 3/4 = -7/4
3x - 5x - 2 + 6
3x - 5x = -2x
-2 + 6 = 4
so, in total the simplified expression is
-2x + 4
