Let the second no. be x
-3x = 21 → x = 21/-3 → x = -7
Answer:
Step-by-step explanation:
perimeter = sum of the sides = (3y+5) + (y-4) + (6y) = 10y + 1
i think its 6
im so sorry if its wrong im pretty sure it is
<u>Answer</u><u>:</u><u> </u><u>B</u>