Hi,
WORK:

Multiply both sides of equation by 3.

Distribute one half thought parenthesis.

Multiply both sides of equation by 2.

Move r variable to left side and change its sign.

Collect the like terms.

Result:

Hope this helps.
r3t40
Answer:
rigid motion preserves the original shape and size of the figure—so the new figure after the rigid motion and the old figure before it would be congruent.
Answer:
It is <2 and<1 which is also the second one.
Step-by-step explanation:
hope this helped!