I NEED ANSWERS ASAP!!

Fill in the blanks to explain what needs to be done in the current step to get to the next step.
3x +4 2x +9=17-x
Step 1: 3x +4- 2x +9 = 17-x
Step 2: x +13= 17 -x
Step 3: x + x +13= 17-x+ x
Step 4: 2x +13= 17
Step 5: 2x + 13 - 13 = 17-13
Step 6: 2x = 4
Step 7: x = 2