1 thought on “The product of two rational numbers is 20/56. If one of the numbers is -5/48,<br />find the other. help”
Step-by-step explanation:
the denominators (bottom):
a
b
⋅
c
d
=
a
⋅
c
b
⋅
d
After this, you might have to simplify if asked to do so.
Here’s an example:
5
8
⋅
4
7
Following our rule, we should first multiply the nominators:
5
⋅
4
=
20
After this, we should multiply the denominators:
8
⋅
7
=
56
And then we should divide both these numbers:
5
8
⋅
4
7
=
5
⋅
4
8
⋅
7
=
20
56
If you’re asked to simplify this answer to the lowest terms, you should divide both the nominator and denominator by 4 (in this case), because that’s the GCD of the two numbers.
Step-by-step explanation:
the denominators (bottom):
a
b
⋅
c
d
=
a
⋅
c
b
⋅
d
After this, you might have to simplify if asked to do so.
Here’s an example:
5
8
⋅
4
7
Following our rule, we should first multiply the nominators:
5
⋅
4
=
20
After this, we should multiply the denominators:
8
⋅
7
=
56
And then we should divide both these numbers:
5
8
⋅
4
7
=
5
⋅
4
8
⋅
7
=
20
56
If you’re asked to simplify this answer to the lowest terms, you should divide both the nominator and denominator by 4 (in this case), because that’s the GCD of the two numbers.
20
56
=