Respuesta :

thomascrofts13

Answer:A: x= x+6 (6+x=6x) B: top side= 6x, meaning that (because i measured it) x on the side is 6x too, meaning all sides add up to 6x. hope this is helpful

Step-by-step explanation:

S1NGH

Answer:

a) 4x + 12 = 54

b) Long side = 16.5cm and Short side = 10.5cm

Step-by-step explanation:

→ Perimeter = All of the sides added together so,

x + 6 + x + 6 + x + x = 54

→ Simplify

4x + 12 = 54

→ Minus 12 from both sides to isolate 4x

4x = 42

→ Divide both sides by 4 to isolate x

x = 10.5