First, you make 9 into a fraction which would become 36/4
then, subtract 9/4 from both sides so that would give you 3/4x = 27/4
then divide each side by 3/4 (same thing as multiply by its reciprocal) and that would give you x=9
(144) * (x^2)
(12^2) * (x^2)
(3^2) * (2^2^2) * (x^2)
3^2 * 2^4 * x^2
A = 5
4a + b = 6
4(5) + b = 6
20 + b = 6
b = 6 - 20
b = - 14 <=== u can prove that b = -14