This is just combining like terms.....
6n2 - 5n2 + 7n2
n2 + 7n2
=8n2
Answer: the best answer is 3(-3a-1)
Step-by-step explanation:
<span>Subtract 7 from both sides of the equation. Check: Substitute -4 for x in the original equation. If, after the substitution, the left side equals the right side, your answer is correct. ( -4 ) + 7 = 3 </span>
The interior angles of a pentagon all add up to be 540°
