18. 1/2 of 18 is 9. 1/3 is 6. 6+6+9 = 21
Answer:
(7x + 9)(7x -9)
Step-by-step explanation:
if there are no variables remaining and the left side equals the right side, then there are Infinite Solutions.
if there are no variables remaining and the left side does NOT equal the right side, then there are NO Solutions.
x=14/5
It is this because you would have to first multiply each side by 3, making the equation x+2=24/5, or 4 and 4/5.
Then you would have to subtract two from each side, making x=2 and 4/5, or 14/5