Question

Is 4 a root of 3x - 9 = 12?

Answer 1

Step-by-step explanation:

3x = 12 + 9

3x = 21

x = 21 / 3

x = 7

and 7 is not a root of 4

Answer 2

Answer:

No

3x-9=12

12+9=3x

21=3x

21÷3=x

7=x

7 is not the root of 4.

So,4 is not a root of 3x-9=12