2(q-3)=4q-9
2(q - 3) = 4q - 9
2q - 2*3 = 4q - 9
2q - 6 = 4q - 9
Subtract 2q from both sides
-6 = 2q - 9
Add 9 to both sides
3 = 2q
divide both sides by 2
3/2 = q
(or just q = 3/2)
