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