exam Maths Puzzle Numerical Ability

i have to find the equivalent to this expression.
4(12m/3)+9-2(3m)
choices are as follows:
A: 16m+9
B: 31m
C: 10m+9
D: 19m
This problem has confused me. Thanks!!!

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exam Other Question

10 + 10y2=x Solving Rational Equations.
Solve, and check
y/10 = 2/5 + 3/8


-1/3 - 5/4y = 3/4 - 1/6y