Question 837632
To solve for A, we need to get A all by itself on the left side of the equal sign.  To do this, first add 1 to both sides of the equation:


8A - 1 + 1 = 19 + 1 ----->


8A = 20


Next, divide both sides of the equal sign by 8:


8A/8 = 20/8 ----->


A = 20/8


Finally, we can reduce the fraction to it's lowest terms by dividing both the numerator and denominator by 4, giving us our final answer:


A = 5/2