How do you solve #a/15=4/5#?
4 Answers
Explanation:
Simply use cross multiplication
hope that helped.
a = 12
Explanation:
Here,
Or,
Or,5a = 60
Or,a =
Or,a = 12
Explanation:
#"Alternatively multiply both sides of the equation by"#
#"the "color(blue)"lowest common multiple of 15 and 5"#
#"the lowest common multiple of 15 and 5 is 15"#
#cancel(15)^1xxa/cancel(15)^1=cancel(15)^3xx4/cancel(5)^1#
#rArra=3xx4=12#
Explanation:
A fraction's structure is such that we have:
You can not
Multiply by 1 and you do not change the value of something. However, 1 comes in many forms so you change the way something looks without changing its value.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Now that the bottom numbers or size indicators (denominators) are the same we can just compare the top numbers or counts (numerators).
Mathematically you say: multiply both sides by 15#
So we now have:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If we divide the left hand side by the right hand side we will get 1 if they are the same.