Question

Solve for x in the proportion 3x over 3x - 36 = -1 over x

Answer 1

3x / ( 3x -36) = -1/x ?

Answer 2

yea

Answer 3

3x/3(x-12) = -1/x
x/(x-12) = -1/x cross multiplie
x^2 = - (x-12)
x^2 = -x+12
x^2 +x -12 =0
(x+4)(x-3)=0
x+4=0
x_1=-4
and
x-3=0
x_2=3

x_1 and x_2 are solutions

Answer 4

ok ?

Answer 5

k

Answer 6

good luck

bye