shoutauzamaki shoutauzamaki
  • 11-03-2019
  • Mathematics
contestada

Use cross multiplication to solve the following proportion for x.

7/9 = x/27

(Please include steps)

Respuesta :

altavistard
altavistard altavistard
  • 11-03-2019

Answer:

x = 21

Step-by-step explanation:

It's easier, tho' not essential, to re-write this equation as

7        x

---- = ------

9       27

To cross-multiply:  draw an imaginary line diagonally through 9 and x.  Multiplying, we get 9x.  Do the same with the other diagonal, through 7 and 27:  we get 7(27) = 189.

Then we have a new equation without fractions:  9x = 189.

Solve for x.  To do this, divide both sides by 9, obtaining:

x = 21

Answer Link
izzy24353 izzy24353
  • 11-03-2019

X is equal to 21 7/9 times x/27 is 9x=189 and that is 21
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