Problem
a) \( 8 x-(3-x) \) b) \( 3-(8 x-3) \) c) \( (3 x+2 y)+(5 x-3 y) \) d) \( (2 y-3 z)-(2 y-5 z) \)
Solution
Step 1 ：\(8x - (3 - x) = 8x - 3 + x = 5x + 3\)
Step 2 ：\(3 - (8x - 3) = 3 - 8x + 3 = -5x + 6\)
Step 3 ：\((3x + 2y) + (5x - 3y) = 3x + 2y + 5x - 3y = 8x - y\)
Step 4 ：\((2y - 3z) - (2y - 5z) = 2y - 3z - 2y + 5z = - 2z\)
