Answer:
1st one: (x-7)
2nd: (-x+7)
3rd: (5x+3)
Explanation:
1: you subtract like terms so first you do 3x-2x which is x and do -2-5 and get -7 so its (x-7)
2: do 2x-3x and get (-x) and then do 5-(-2) and get 7 so the answer is (-x+7)
3: first do 2x+3x and get 5x and then do 5+(-2) and get 3 so the answer is (5x+3)