What is the solution of the equation: -12 = 4.7k + 11.5

k=-5

Step-by-step explanation:

-12=4.7k+11.5

switch sides - 4.7k+11.5=-12

multiply both sides by 10 - 4.7k times 10 +11.5 times 10=-12 times 10

refine - 47k+115=-120

subtract 115 from both sides - 47k+115-115=-120-115

simplify it - 47k=-235

divide both sides by 47 - 47k/ 47= -235/ 47

simplify - k =-5

n

step-by-step explanation:

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)