Solve 4/5x-9=3 i really need this asap

I will assume that you meant (4/5)x - 9 = 3.  In other words, (4/5) is the coefficient of x.

Start by adding 9 to both sides:  (4/5)x - 9 + 9 = 3 + 9, or (4/5)x = 12.

To isolate x, mult. both sides by (5/4):                         (5/4)(4/5)x = (5/4)(12)

Simplifying this result, x = 15

.there can be infinite values of m and n that can satisfy the above equation. for each value of m of m or n. there maybe infinite sets of solution for the above

step-by-step explanation: