Question

valoarea reala a lui m,pentru care ecuatia -4mx+3(m-2)x+5=-19 are solutia -3

Answer 1

x=-3 solutie
-4m(-3) +3(m-2)(-3) +5 +19=0
12m -9(m-2) +24=0
12m -9m +18 +24=0
3m + 42=0
3m=-42
m=-42/3
m=-14

Answer 2

12m-9m+18+5=-19 3m+23=-19 3m=-42 m=-14