Solve this equation. 5n+7=7(n+1)-2n

5n + 7 = 7(n+1) - 2n

First distribute 7 to all terms inside the parenthesis

7(n) = 7n
7(1) = 7

5n + 7 = 7n - 2n + 7

Simplify. Combine like terms

5n + 7 = 5n + 7

True.

If you want to continue:

Isolate the n, move all variables to one side, and constants to the other

5n (-5n) + 7 (-7) = 5n (-5n) + 7 (-7)

0 = 0

True

hope this helps

Step-by-step explanation:

(x²-x +7) + (9x²+6)=

Combine x² and 9x² to get 10x²

10x²-x+7+6

Combine like terms

10x²-x+13

Making your answer A.)