C=2ar for r
idk what to do tbh

To solve for a variable means to isolate the variable on one side of the equation.

C = 2ar

Simply divide both side by 2a.

C/2a = r

Done.

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10

answer: y=4000x+14000

step-by-step explanation: