janessa1 janessa1
  • 18-12-2015
  • Mathematics
contestada

how can i evaluate this expression 3/2-4/7

Respuesta :

Аноним Аноним
  • 18-12-2015
[tex] \frac{3}{2} - \frac{4}{7} [/tex]
[tex]= \frac{3}{2} + \frac{-4}{7} [/tex]
[tex]= \frac{21}{14} + \frac{-8}{14} [/tex]
[tex]= \frac{21+-8}{14} [/tex]
[tex]= \frac{13}{14} [/tex]
Decimal: 0.928571
Answer Link
dalendrk
dalendrk dalendrk
  • 18-12-2015
[tex]simple\ method:\\\\\dfrac{a}{b}-\dfrac{c}{d}=\dfrac{ad-bc}{bd}\\==================\\\dfrac{3}{2}-\dfrac{4}{7}=\dfrac{3\cdot7-2\cdot4}{2\cdot7}=\dfrac{21-8}{14}=\boxed{\dfrac{13}{14}}[/tex]
Answer Link

Otras preguntas

In two years, Winston who is eight years older than Xavier, will be twice as old as Xavier. How old is each one now?
The two types of feature analysis are ___________ and ____________.
Place a check mark next to each statement that is true. a. Eugene Debs was the founder of the Socialist Party in the United States. b. The Socialist Party succe
potatoes are selling for $0.39 per pound. how much is 17 lbs. of potatoes?
when analyzing a story, what is the best characteristic to examine
running out of points LOL if u can can i have some points?
Write the following as a simple fraction in lowest terms
People can overcome their own problems is it's agree or disagree
The poison control nurse receives a call from the parent of a 2-year-old child. the parent states, “i just took a quick shower, and when i finished, i walked in
Point k is the midpoint of line segment JL, and KL=4. How do u find jk