Question

What is this
3(4x - 2) = 30

Answer 1

3(4x -2)

You have to distribute!

3•4x is 12x
3•-2 (three times negative two) is -6
So 12x + (-6) or just 12x -6
So what you do, is because there is a negative six add a positive six to both sides that way it ends up as
12x = 30
Then you want to isolate the variable
There us a positive twelve so you want to take away 12 from both sides giving you 18

X = 18

Answer 2

x = 3

Step-by-step explanation:

Use the distributive property and distribute the 3 throughout the equation:

3(4x - 2) = 30

3(4x) - 3(2) = 30

12x - 6 = 30

12x - 6 + 6 = 30 + 6 -Add 6 to both sides of the equation

12x = 36 -Divide both sides by 12

x = 3