Question

Solve the following equation.
2(3x +9) = 0
X =

Answer 1

6x +18 = 0 due to distributive property
6x=-18 subtract 18 on both sides
X=-3 divide by 6 on both sides

Answer 2

x = -2

Explanation:

2(3x + 9) = 0

You multiply everything inside the brackets by 2

6x + 18 = 0

Now, make the variables in one side and the numbers in the other side.

It becomes: 6x = 0 - 18

6x = -18

Just so you remember:

6x = 6 • x

And the opposite of multiplication is division

so it becomes: x = -18 / 6

x = -3

CHECK:

Let x = -3

2[3(-3) + 9] = 0

2(-9 + 9) = 0

2 • 0 = 0

0 = 0