I’m order to solve this, we need to work with what we are given, which in this case, is +12. +12 is the constant here and we can see that in the other part of the equation, +3 is the constant part of the parentheses that multiplies out to the other constant when the distributive property is used. So, we need to find what multiplies by 3 to make 12. As we know, that is 4. So, we know now that 4 is the number that will be multiplied by the expression in the parentheses, so we just multiply the whole expression by it (multiply each term by 4). When we do that, it comes out to this:
