Answer:
The answer is 126!
Step-by-step explanation:
Youre going to substiture the for the place they stand in the equation. So in 6mn, youŕe going to put 6(3)(7) and multiply.
you subatitute the letters
so 6 ×3×7=126
in 6mn
m and n stand for a number which is m is 3 and n is 7
as two letters are together with number you multiply them
so 6 ×3(m)×7(n)=126
126 is the answer
