Don’t understand help

Barb had 16 sports cards to begin with

Step-by-step explanation:

x - 6 = 10

We will add 6 on both sides of the equal sign. We add to make the minus 6 become 0.

x = 16

The Sample Response is:

By the parallelogram angle theorem, opposite angles of a parallelogram are congruent. Therefore, angle T must be congruent to angle G, and angle G must be congruent to angle L. By the transitive property of congruence, angle T is congruent to angle L.