Final answer:
To rearrange the equation y=7-x and have x as the subject, subtract 7 from both sides and multiply both sides by -1. The rearranged equation is x = -y + 7.
Step-by-step explanation:
To rearrange the equation y = 7 - x and have x as the subject, we can start by isolating x on one side of the equation. Let's begin:
y = 7 - x
Subtract 7 from both sides:
y - 7 = -x
Multiply both sides by -1 to solve for x:
-y + 7 = x
Thus, the equation can be rearranged with x as the subject as x = -y + 7.
Learn more about Rearranging equations