If x = 2 First we need to multiply out the brackets. To do this we need to multiply what's inside the brackets by 3, as this is the number next to the bracket - meaning it needs to be multiplied. This makes 3x+12 Here we can figure out the value of 3x - which means 3 multiplied by x, which is 6. 6 + 12 is 18. 18 is the value of 3(x+4) Hope this helped :)
