Question

What is 1 and 3/4-7/10

Answer 1

first turn 1 3/4 into an improper fraction

1x3=3+4=7
7/4-7/10

now make a common denominator

the common denominator is 20 so do 4x5=20 and 10x2=20

do the same to the numerators 7x5=35 and 7x2=14

35/20-14/20

the answer as an improper fraction is 21/20 and as a mixed number it is 1 1/20

Answer 2

`1 (3)/(4) - (7)/(10)`
We first have to change the mixed number into a fraction and we do this by multiplying the denominator to the whole number and adding the product to the numerator.
It looks something like this:

`1 (3)/(4)`
4×1=4 (Multiply the denominator and the whole number)
4+3=7 (Add the product and the numerator)

`(7)/(4)`
Keep the same denominator
Now that we have the improper fraction, we can subtract.

`(7)/(4) - (7)/(10)`
Now in order to subtract we have to have a common denominator, so lets make both of the denominators 20.

`(7)/(4)` ×
`(5)/(5)` =
`(35)/(20)`

`(7)/(10)` ×
`(2)/(2)` =
`(14)/(20)`

`(35)/(20) - (14)/(20) = (21)/(20)`
21÷20=1.05 or
`1 (1)/(20)`
If you have any questions, feel free to ask. Hope that helped :)