Firstly, foil -(k + 1/4) (think of the minus sign as -1):

Next, combine like terms:

Next, we have to add 1/3k on both sides, but first we have to find the LCD, or lowest common denominator, of 3 and 12. To do this, list the multiples of both and the lowest one they share is their LCD. In this case, the LCD is 12. Multiply both sides of -1/3 by 4/4 and 1/12 by 1/1:

Now add 4/12k on both sides of the equation:

Next, to subtract 4/12 on both sides we need to find the LCD of 4 and 12. It's the similar process as we did with 12 and 3. This time the LCD is also 12. Multiply both sides of -1/4 by 3/3 and 4/12 by 1/1:

Now subtract 4/12 on both sides:

Lastly, multiply both sides by 12/5, and your answer will be:

look a the sides they are perpendicular

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400