Answer:
[tex]a=1[/tex]
Step-by-step explanation:
So we have the equation:
[tex]2(a+7)-7=9[/tex]
And we want to find the value of a.
So, add 7 to both sides. The left side cancels:
[tex]2(a+7)=16[/tex]
Divide both sides by 2:
[tex]a+7=8[/tex]
Subtract 7 from both sides:
[tex]a=1[/tex]
Therefore, the alue of a is 1.
And we're done!
