Given the expression 7(3h+9m), to evaluate this, we will need to expand the expression using distributive law.
According to the law A(B+C) = AB + AC. You can see that A is distributed over B and C. Same concept will be applied to expand the given expression as shown;
7(3h+9m) = 7(3h) + 7(9m)
7(3h) + 7(9m) = 21h + 63m
Hence the correct answer is 21h + 63m
