The value of x is -10 ;
The property that justifies the first step is the commutative property of addition
Here, we want to solve the equation
We start by bringng the like terms together
In this case, we bring the x-terms together and also, bring the numbered terms together
We have this as follows;
[tex]\begin{gathered} x\text{ + x +x +x +4 + 6 + 2 = -28} \\ 4x+12\text{ = -28} \\ 4x\text{ = -28 - 12} \\ 4x\text{ = -40} \\ x\text{ = }\frac{-40}{4} \\ x\text{ = -10} \end{gathered}[/tex]The property that justifies the first step is the commutative property of addition. It was chosen because if we bring terms which are of the same kind together to add, the result yielded will be a term which is the same type as those which we have brought together
