Question

Evaluate the expression 2m+2n if m=9 and n=3

Answer 1

Substitute m and n values into the expression.
2(9)+2(3)
18+6= 24
24 is your answer.

Answer 2

Just substitute each number in for the variables: 9 for m and 3 for n.

2m+2n
= 2(9)+2(3)
= 18+6
= 24