I need help with this please and thank you

Answer:
9. 6
10. 72
Step-by-step explanation:
9. [tex]x[/tex] - number
twice a number is [tex]2x[/tex]
5+2 = 17 | Subtract 5
[tex]2x = 12[/tex] | Divide by 2
[tex]x=6\\[/tex]
10. Let the number be "a"
[tex]\frac{a}{3} -4=20\\\\\frac{a-12}{3}=20\\ \\a-12=60\\\\a=60+12\\\\a=72[/tex]
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