Answer:
x=7
Step-by-step explanation:
write -2+16x+9x+7=180
then add all like terms (-2+7=5) and (16x+9x=25x)
5+25x=180
-5. -5
25x=175
/25. /25
180=-2+16x+9x+7
180=25x+5
175=25x
175/25=25x/25
7= x
