Answer:
-17
Step-by-step explanation:
1) First start from the right of the equation by multiplying
( -3 ) -( 5) (- 4) -> ( -3 ) -( -20)
2) Finally subtract, since there is two minus signs it will change to addition
( -3 ) -( -20) -> -3 + 20 = -17
Hope this helped :)