The first step to solving this equation is to change the signs on both sides of the equation
y = -

x + 3
Since we don't know what x is but we do know why y is,, we will write our answer with the answer to y and x being left as undefined.
y = -

x + 3, x ∈ R
Let me know if you have any further questions
:)
Answer:
T= 4p-18-pr
Step-by-step explanation:
When you estimate you either round up or down to get an even number. It's easier to mentally multiply numbers ending in 0.