Commutative Property of Addition;
Reverse of Distributive Property to combine like-terms;
Additive Inverse Property to have variable expression on one side and all constants on the other side;
Simplify or compute what is computable;
Multiplicative Inverse Property for using Multiplication Property of Equality.
Those are reasons for the steps which can be taken, but not actually showing the specific steps. SOME or MANY people will be able to jump through or skip through some of the steps; but not everybody can.
.
.
(BOLD for emphasis)
Algebra requires learning Number Properties and Properties of Equality, and learning to use them. FILL-IN the steps according to the reasons given for how to solve your equation.
(