Final answer:
To solve the equation 3=(7x+11)/(3x+9), cross multiply to eliminate the denominator, then simplify and solve for x.
Step-by-step explanation:
To solve the equation 3=(7x+11)/(3x+9), we can cross multiply. Multiplying both sides of the equation by (3x+9), we get: 3(3x+9) = 7x+11. Expanding and simplifying, we have: 9x+27 = 7x+11. Subtracting 7x from both sides, we have: 2x+27 = 11. Subtracting 27 from both sides, we get: 2x = -16. Finally, dividing both sides by 2, we find x = -8.