Question

Simplify: 9(a + b) + 4(3a + 2b)

Answer 1

Explanation:

first, multiply 9 with both a and b also 4 with 3a and 2b

second, collect the variables which means the a's together and the b's together

third, add the variables

finally, since different variables can not be added the answer will be 21a+17b

Answer 2

21a + 17b

Explanation:

To simplify, we need to distribute the 9 to the terms inside of the parentheses that it is being multiplied by and 4 to the terms inside of the parentheses that it is being multiplied by like so:

9(a)+9(b)+4(3a)+4(2b)

9a+9b+12a+8b

Add like terms

21a + 17b