Question

The expression on the left side of an equation is shown below. 3x+9= If the equation has no solution, which expression can be written in the box on the other side of the equation?

Answer 1

12x

Explanation:

add the numbers and then put the variable in front of it

Answer 2

3*x

Explanation:

Note that 3*x + 9 = 3*x if you choose to put the expression 3*x on the right side of the expression.

To solve this equation, you subtract 3 * x on both sides of the equation, obtaining:

3*x+9-3*x=3*x-3*x

9=0

You get 9 = 0. This expression cannot be true regardless of the value taken by x. You can tell then that in this case the equation has no solution.