Question 224106
5a-5=7a-19


Subtract 7a from each side:
5a-7a -5= 7a -7a-19


-2a-5= -19


Add + 5 to each side:
-2a-5+5=-19+5
-2z=-14


Divide both sides by -2:
{{{(-2z)/-2=(-14)/-2}}}
{{{x=7}}}



For an additional explanation of Equation solving, see my own website by doing a "Bing" search for my last name "Rapalje".  Look for my website "Rapalje Homepage" near the top of the search list.  On my webpage, look for "Basic, Intermediate and College Algebra: One Step at a Time."  Select "Basic Algebra" and look in "Chapter 1" for "1.08 Basic Equation Solving."  This is my own non-traditional explanation that my own students ALL found easier to understand than the one given in traditional textbooks.  See also the corresponding section in my "MATH IN LIVING COLOR" pages in which I solved a lot of these types of problems in COLOR!!  


R^2


Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamonte Springs Campus