Answer:
X= 31 / a - 7
Step-by-step explanation:
The answer is x = 31/a-7
First we need to Add -7x to both sides
ax−3+−7x=7x+28+−7x
ax−7x−3=28
Second, we have to Add 3 to both sides
ax−7x−3+3=28+3
ax−7x=31
The next step you have to do is Factor out variable x
x(a−7)=31
Lastly, Divide both sides by a-7