Question

What is the value of -3mn+4m-3 when m=2 and n=-4? -43 -40 5 29

Answer 1

29

Explanation:

- 3mn + 4m - 3 ← substitute m = 2 , n = - 4 into the expression

= - 3(2)(- 4) + 4(2) - 3

= - 3(- 8) + 8 - 3

= 24 + 5

= 29