Answer:

2 * (3a - b + 6b - a)

2 * (2a + 5b)

4a +10b

Perimeter of the rectangle is 4a + 10 b.

Step-by-step explanation:

Answer:

.

Step-by-step explanation:

ᴘʟs ʜᴀᴍᴇ ᴛʜᴀɴᴋ ɴᴀ ᴅᴇ ᴀᴀᴘ.

ʙᴜᴛ ᴛʜᴀɴᴋ ᴜ sᴏᴏ ᴍᴜᴄʜ.