Let f(x) = 2-3x/5-2x. For what value of a is f(a) = 3?
set the equation equal to 3
(2 - 3a) / (5 - 2a) = 3
multiply both sides
2 - 3a = 15 - 6a
add 6a to both sides
2 + 3a = 15
subtract 2 from both sides
3a = 13
divide by 3
a = 13/3