Final answer:
To solve -t + 1/2b = Y for b, add t to both sides and then multiply both sides by 2 to get b = 2(Y + t).
Step-by-step explanation:
To solve the equation -t + 1/2b = Y for b, we need to isolate the variable b. We can start by adding t to both sides of the equation, resulting in 1/2b = Y + t. Then, to solve for b, we need to multiply both sides by 2, giving us the solution b = 2(Y + t).