What is the simplified form of the expression? 1/3(21m + 27)
A. 63m + 9
B. 7m + 9
C. 7m + 81
D. 7m + 27
i need help plz don't know how to do it.
What is 1/3 of 21m?
What is 1/3 of 27?
7m + 9
To simplify the expression 1/3(21m + 27), you need to distribute the 1/3 to both terms inside the parentheses. This means multiplying 1/3 by each term separately.
First, multiply 1/3 by 21m. To multiply a fraction by a whole number, multiply the numerators and multiply the denominators. So, (1/3)(21m) = (1*21)/(3) * m = 21m/3 = 7m.
Next, multiply 1/3 by 27. Similarly, (1/3)(27) = (1*27)/(3) = 27/3 = 9.
Now, we have 7m + 9.
Therefore, the simplified form of the expression 1/3(21m + 27) is B. 7m + 9.