Answer:
A. [tex]\frac{rs-t}{2}[/tex]
Step-by-step explanation:
Given the expression [tex]s = \frac{2x+t}{r}[/tex] isolate [tex]x[/tex]
The first step is multiply both sides by [tex]r[/tex] then you have
[tex]sr = 2x + t[/tex]
know substract both sides by [tex]t[/tex]
[tex]sr - t = 2x[/tex]
The last step is multiply by [tex]\frac{1}{2}[/tex] both sides of the equation and get the answer
[tex]\frac{sr - t }{2} = x[/tex]
