3(x + 4) = 2x + 4x - 6
The first step is to open the parentheses on the left by multiplying the terms inside it by the term outside. We have
3x + 12 = 2x + 4x - 6
3x + 12 = 6x - 6
Collecting like terms, we have
6x - 3x = 12 + 6
3x = 18
Dividing both sides by 3,
x = 18/3
x = 6
