Answer:
I believe the x value is 5
Step-by-step explanation:
point A is plotted on point (5,3)
5 is x and y is 3, hope it helps
150-x-2x=120+2x
+x +x
150-2x=120+3x
+2x +2x
150=120+5x
-120 -120
30=5x
/5 /5
6=x