zakia asked in Science & MathematicsMathematics · 9 months ago

# 3 and 3/4 x 2 and 1/2?

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• 8 months ago

3 3/4 * 2 1/2 = 15/4 * 5/2 = 75/8 = 9 3/8

• Anonymous
9 months ago

(15/4)*(5/2) = 75/8

• 9 months ago

Seems you maths people like to answer the same easy question over and over again, and yet my yahoo maths questions never get answered? Sorry to hijack this question, but I now have an accumulation of questions over the months but need to solve them so I can grasp the subject at hand and move on to the next. I'm not forcing anyone, just have a limited amount of time and been stuck on the same thing for ages. This is just one...

• Betty
Lv 7
9 months ago

15/4 x 5/2 = 75/8 = 9 3/8

• geezer
Lv 7
9 months ago

3 3/4 x 2 1/2

15/4 x 5/2

75/8

9 3/8

• David
Lv 7
9 months ago

3.75 x 2.5 = 9.375 or 9 and 3/8

• 9 months ago

3 3/4 x 2 1/2

= 15/4 x 5/2

= 75/8

= 9 3/8

• 9 months ago

Here's another way to multiply mixed numbers:

(3 + 3/4)(2 + 1/2)

First: 3 * 2 = 6

Outer: 3 * 1/2 = 3/2 = 1 1/2

Inner 3/4 * 2 = 6/4 = 3/2 = 1 1/2

Last: 3/4 * 1/2 = 3/8

6

1 1/2

1 1/2

.. 3/8

-------

9 3/8

9 3/8

• 9 months ago

3 3/4 * 2 1/2

15/4 * 5/2

To multiply fractions, the product of the numerators is the product's numerator and the product of the denominators is the product's denominator, so:

(15 * 5) / (4 * 2)

and simplify both halves:

75/8

And if you need it back as a mixed number:

9 3/8