Question

Find the LCD that would eliminate the fractions in this equation.
x/2+4/5=9/12

Answer 1

/5:
5 , 10, 15, 20, 25, 30

9/12=3/4, and x/2=2x/4 so
/4:
4, 8, 12, 16, 20, 24, 28, 32

Answer 2

hmm in general you multiply all the prime factors while ignoring repeats

--> 2* 5 * (2*2*3)

notice 2 and 12 share factor of 2 so do not include the first "2"

5*(2*2*3) = 60

LCD = 60

Answer 3

The perimeter of a rectangular garden is 52 feet. The length of the garden is 4 feet less than twice the width. What is the width of the garden?