Answer:
5 - 7
Step-by-step explanation:
a - b
5 - 7 = -2
Answer:c
15x - 4
Step-by-step explanation:
15x - 4
which is similar to n:1 where
<u>Step-by-step explanation:</u>
Here we have to Express in the form n:1 give n as a decimal 21:12 . Let's find out:
Given ratio as 21:12 . Let's convert it into n:1 , where n is decimal
⇒
⇒
⇒
⇒
⇒ { dividing denominator & numerator by 4 }
⇒
⇒
⇒ which is similar to n:1 where
1 and 19, 19 is a prime number.