The plan had been to get help from friends, but a snowstorm kept everyone at home. As Emmett's mother, Mamie Till-Mobley, looked at the big roll of flooring in frustration, the boy turned to her and said, "We can do it ourselves."
First subtract the 2 to isolate the 7x. Remember what you do to one side you do to the other, so then you would subtract 2 from 30 as well giving you 7x=28. After that in order to isolate x, you would divide by 7 on both sides giving you x=4.
