Answer:
10x-14
Step-by-step explanation:
2n+14=14+2n so this one as an infinite number of solutions. The second one 1-x=-x-6 so you add x on both sides which results in it having no solutions.
The measure of G is 28 because it is an isosceles triangle

In the given figure, the angles 5 and 6 form Vertical opposite angle pair.
so, correct choice is Vertical