27=-2y+15
subtract 15 from both sides, then divide through by -2.
27=-2y+15
2y = 15 - 27
2y = -12
y = -12/2
y = -6
To solve for y in the equation 27 = -2y + 15, you need to isolate the variable y.
Step 1: Start by getting rid of the constant on the right side of the equation. Subtract 15 from both sides:
27 - 15 = -2y + 15 - 15
12 = -2y
Step 2: Next, solve for y by dividing both sides of the equation by -2:
12 / -2 = -2y / -2
-6 = y
Therefore, the solution to the equation 27 = -2y + 15 is y = -6.