Answer:
-2.25
Explanation:
The only way the expression can equal zero is if the numerator is zero.
The numerator is the product of 5 and the expression m + 2.25
A product is equal to zero if one of the factors equals zero.
5 is obviously not equal to zero, so the only way the product of 5 and m + 2.25 can equal zero is if the factor m + 2.25 equals zero.
We set m + 2.25 equal to zero and solve for m.
m + 2.25 = 0
Subtract 2.25 from both sides.
m = -2.25
If you add -2.25 to 2.25, you get zero. Zero times 5 equals zero. That meakes the expression equal to zero.
Answer: -2.25