Answer:
Infinitely many solutions
Step-by-step explanation:
<u>3(x+5)</u> = 7x + 12 - 4x + 3
3x + 15 = <u>7x</u> + 12 <u>- 4x</u> + 3
3x + 15 = 3x <u>+ 12 + 3</u>
3x + 15 = 3x + 15
They are the same equation, therefore there are infinitely many solutions.