21 is a rational number because it is an integer, which can be converted into a fraction.
<u>Step-by-step explanation:</u>
When a denominater and numerator are integers and gives a quotient then it is a rational number.
21/1, where 21 is denominator and 1 is numerator the quotient is 21. Therefore 21 is a rational number which can also be considered as a ratio.
−3y−(8y+1)
Distribute the Negative Sign:
=−3y+−1(8y+1)
=−3y+−1(8y)+(−1)(1)
=−3y+−8y+−1
Combine Like Terms:
=−3y+−8y+−1
=(−3y+−8y)+(−1)
=−11y+−1
Answer:
subtraction & multiplication
Step-by-step explanation:
The answer is -6 because if you follow PEMDAS, it goes Parenthesis, Exponents, Multiplication & Division, Addition & Subtraction, left to right
