Subtract the like following like terms:
-5afrom-9a
Finding the subtraction
-9a-(-5a)=-9a+5a=(-9+5)a=-4aSo,-9a-(-5a)=-4a
xfrom5x
2a2bfrom-3a2b
-4y25from6y27
-185ax2from-1113ax2
34y-12y