R=[(-1)(A/1)]-t+P > explanation > P=(A/1)+rt > subtract "r" from both sides to
get > P-r=(A/1)+t > then subtract "P" from both sides to get > -r=(A/1)+t-P >
then multiply the whole equation by "-1" to make "r" positive > (-1){-r=(A/1)+t-P}
> r=[(-1)(A/1)]-t+P .................. if this was not the answer then I'm sorry ... <3
Variables are any letter so in the case of your equation the variables would be f and x.
A) x = 3y+6
3y = x-6
divide both sides by 3.
y = (x/3) -2
b) x = 5y-10
5y = x+10
divide both sides by 5.
y = (x/5) +2
c) x = y^2
square root both sides.
y = sqrt(x)
d) x = 2y^2 -4
x+4 = 2y^2
divide both sides by 2.
(x/2) +2 = y^2
square root both sides.
y = sqrt((x/2)+2)
e) x = (y-5)^2
square root both sides.
sqrt(x) = y-5
y = sqrt(x) +5
