Answer:
a. 9x
b. 1x
Step-by-step explanation:
a. take away the (x) for a moment 7+2=9 now add the (x) back in to the 9 and you get 9x
b. take away the (x) for a moment 6-5=1 now add the (x) back in to the 1 and you get 1x
