Question

Determinati ''m'' apartine lui R , astfel incat -2 sa fie solutie a ecuatiei cu necunoscuta x apartine lui R .
x+1=mx+3

Answer 1

$x+1=mx+3 \\\\ -2+1=-2m+3 \\\\ -1=-2m+3 \\\\ -3-1=-2m \\\\ -4=-2m \ \ |:(-2) \\\\ \boxed{2=m}$

Answer 2

x+1=mx+3
-2+1=-2m+3
2m=4
m=2