Question

$frac{-3m-219}{15} +17=4$ решите пожалуста 

Answer 1

(-3m-219+255)/15=4
-3m-219+255=60
-3m-219+255-60=0
-3m-24=0
-3m=24
m=-8

Answer 2

-3m-219+255=60;
-3m=60-255+219;
-3m=-24;
m=-24:(-3)
m=8
Ответ:8