Question

3n+1 +3n/3n+3 - 3n+1​

Answer 1

Answer:

5

Step-by-step explanation:

3n+1+3n/3n+3-3n+1

3n+1+3-3n+1

1+3+1

5

Answer 2

Answer:

120

Step-by-step explanation:

3n+1 +3n(3n+3- 3n+1)

=9n²+3n+9n²+ 9n+9+9n-9n²-3n-9n²+3n+1+3n

=12n+10

=) 12n= -10

=) n = -10 x (-12)

=) n = 120