Answer:
3 cm
Step-by-step explanation:
Find the value of x:
[tex]5-2x=-4x+9[/tex]
[tex]-2x+4x=-5+9[/tex]
[tex]2x=4[/tex]
[tex]x=4/2[/tex]
[tex]x=2[/tex]
Find one side of the triangle by adding 2 as the value x:
[tex]=5-2x[/tex]
[tex]=5-2(2)[/tex]
[tex]=5-4[/tex]
[tex]=1[/tex]
Perimeter of the triangle:
1 × 3 = 3cm
