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Evaluate the expression mn-3 if m=7 and n=-4

Sagot :

Answer:

To evaluate the expression mn - 3 when m = 7 and n = -4, we simply substitute the values of m and n into the expression.

mn - 3 = (7)(-4) - 3

Performing the multiplication first gives us:

= (-28) - 3

Then, we perform the subtraction:

= -31

Thus, the value of the expression mn - 3 when m = 7 and n = -4 is -31.

Answer:

-31

Step-by-step explanation:

mn-3

where;

m=7 and n=-4

FIRSTLY MULTIPLY M AND N

i.e; 7×-4= -28

THEN SUBTRACT FROM -3

i.e; -28-3= -31