Answer:
a: given
b: multiplication property of equality
c: distributive property
d: simplified
e: addition property of equality
f. division property of equality
Explanation:
step a will always be given because it is starting equation. step b is multiplication property because everything is multiplied by two so you don't have to deal with decimals. step c is distributive because you distribute the -5s in the parentheses. step d is simplified because they combined like terms and nothing changed sides. step e is addition property because you added 5x to both sides. step f is division property because -7 is divided from each side.