can some one remind me how to do the multiplication of 3(1/2) times 5(4/7.
3 1/2 = 7/2
5 4/7 = 39/7
Multiply the numerators together and multiply the denominators together.
7/2 * 39/7 = 273/14 = 19 1/2
ok how about doing it with cross multiplication. this is how im being shown...
3(1/2) x 5(4/7)
(7/2) x (39/7) using cross multiplication
78/49 and getting 9 (1/14)
i don't understand how she is getting 9(1/14)
No, no
7/2 * 39/7
7/7*39/2=
39/2= 19 1/2
To multiply two mixed numbers like 3(1/2) and 5(4/7), we can follow these steps:
Step 1: Convert the mixed numbers into improper fractions.
To convert a mixed number to an improper fraction, multiply the whole number by the denominator of the fraction and add the numerator. Write the result over the original denominator.
For example:
3(1/2) = (3 * 2 + 1)/2 = 7/2
5(4/7) = (5 * 7 + 4)/7 = 39/7
Step 2: Multiply the two improper fractions.
To multiply two fractions, multiply the numerators together and the denominators together.
For example:
(7/2) * (39/7) = (7 * 39)/(2 * 7) = 273/14
Step 3: Simplify the result, if necessary.
If the resulting fraction can be simplified, divide the numerator and denominator by their greatest common divisor (GCD) to reduce the fraction.
For example:
273/14 = 19*3*7 / 2*7 = 19*3 / 2 = 57/2
So, 3(1/2) times 5(4/7) is equal to 57/2.