Question

9/4 - 7/10 i cant figure this out

Answer 1

Answer:

The answer is 31/20.

Step-by-step explanation:

First, you have to have both fractions the same denorminator :

$\frac{9}{4} - \frac{7}{10}$

$\frac{9 \times 5}{4 \times 5} - \frac{7 \times 2}{10 \times 2}$

$\frac{45}{20} - \frac{14}{20}$

Next, you have to subtract :

$\frac{45}{20} - \frac{14}{20}$

$\frac{45 - 14}{20}$

$\frac{31}{20}$

Answer 2

Answer:

9/4 - 7/10= 31/20=1 11/20

Step-by-step explanation:

look first for their LCM=20

2 4 10

2 2 5

5 1 5

1 1

then you divide the LCM which is 20by one of the denominator and multiply by the numerator over denominator

20/4*9=45/20

20/10*7=14/20

now both have the same denominator so we just subtract the numerators

45-14/20=31/20

now we have subtracted and our answer is in improper fraction so we need to change to mixed fraction

31/20=1 11/20