Answer:
6. 51
7. 31
8. 20
Explanation:
2x+8=110
2x=102
x=51
2x+x-3=90
3x-3=90
3x=93
x=31
7x+x+20=180
8x+20=180
8x=160
x=20
5.2m questions
6.7m answers