a) the numerator on one side by the numerator on the other side, and the denominator on the side by the denominator on the other side
b) the numerator on the left side by the denominator on the left side, and the numerator on the right side by the denominator on the right side
c) the numerator on the left side by the denominator on the right side, and the denominator on the left side by the numerator on the righ side
d) both numerators by both denominators
2007-01-15 08:03:46 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
The answer is C.
Take, for example, the fractions 3/4 and 6/8. You multiply 8 by 3 and get 24, and then multiply 4 by 6 and get 24. In this case, since the numbers are equal, your fractions are also equal. This is why the process is called "cross" multiplication. You multiply the numerator with the opposite denominator.
Hope that helps!
2007-01-15 08:12:19 · answer #1 · answered by Genesiss 2 · 0⤊ 0⤋
The answer is C.
If you have the proprtion a/b = c/d, then ad = bc
a and d are called the extremes and b and c are called the extremes. This is often stated that the product of the means equals the product of the extremes.
Conversely, if ad =bc, then either pair can be made the extremes and the other pair made the means. So if ad =bc, then
a/b = c/d or b/a = d/c or b/d = a/c. . Any combination is OK as long as cross multiplication results in ad =bc.
2007-01-15 08:26:38 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋
It means you mulitply one denominator by the opposite numerator, then the same for the other denominator and the remaining numerator then multiply both denominators together.
2007-01-15 08:10:24 · answer #3 · answered by Anonymous · 0⤊ 0⤋
e) none of the above
just kidding.. c)
2007-01-15 08:12:47 · answer #4 · answered by andrade4sveta 2 · 0⤊ 0⤋
c)
2007-01-15 08:20:10 · answer #5 · answered by Anonymous · 0⤊ 0⤋
c)
2007-01-15 08:10:12 · answer #6 · answered by Sheen 4 · 0⤊ 0⤋