Question

3x +9 - 3x +9 =______
Please explain the steps also

Answer 1

Answer:

18

Step-by-step explanation:

because as we know the same negative and positive cancel each other

so the answer becomes===>

3x +9 -3x +9=18

3x and -3x cancel each other and +9and +9 add

so

9 + 9 = 18