Question

-2n + 9 + 2n = 9 ? I need help

Answer 1

Answer:

(Both sides are equal) True for all n

Step-by-step explanation:

-2n + 9 + 2n = 9

Subtract 9 from both sides:

-2n + 9 + 2n - 9 = 9 - 9

Simplify:

-2n + 2n = 0

Add similar elements:

0 = 0

(I hope this helped)

Answer 2

Answer:0n=0

Step-by-step explanation:

-2n+9+2n=9

-9 -9

———————

-2n+2n=0

-2n -2

———————

0n=0