Question 838039
To find the value of a, we need to get a by itself on the left side of the equal sign.  To do this, first add 5 to both sides of the equal sign:


7a - 5 + 5 = 23 + 5


Combine like terms:


7a = 28


Finally, divide both sides of the equation by 7.  This will give us the value of a:


{{{7a/7 = 28/7}}} ----->


a = 4