The equation is 12x-32=p. p is the perimeter. You would have to work backward and add 32 to p, making the equation now 12x=p+32. Now you have to divide it by 12, so the final expression is x=p+32/12 ( x equals p plus 32 over 12)
Answer:
80
Step-by-step explanation:
10- w = 90
w = 90 -10
w = 80
