Question

Daca 5 este solutie a ecuatiei 4x+m=2 atunci m este....

Answer 1

4x+m=2 
x=5
4*5+m=2
m=2-20
m=18

Answer 2

$4x+m=2 \\ x=5 \\ 4 \cdot 5+m=2 \\ 20+m=2 \\ m=2-20 \\ \boxed{m=-18}$