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AnimeBrainly
3 x 1 3/4

first make 1 3/4 a improper fraction

1 = 4/4

4/4 + 3/4 = 7/4

3 x 7/4

multiply the 3 and 7 together. 

3 x 7 = 21

divide 4 from 21

21/4 = 5.25

5.25 is your answer

hope this helps
Flowerly
Hey there!

3 = 3/1

1 3/4 = 7/4

3 x 7 = 21

1 x 4 = 4

= 21/4

Simplifying 21/4 . . .

21/4 = 5 1/4

3 x 1 3/4 = 5 1/4 <-----

Hope this helps you.
Have a great day!