Question

Hi, can anyone help with this?

Answer 1

Explanation:

1). Given

2). DE = EF

3). Given and (2)

4). Subtraction Property of Equality (L.H.S. - 6x = R.H.S. - 6x)

5). 6 = 2x (5 + 1 = 2x - 1 + 1)

6). 3 = x (6 ÷ 2 = 2x ÷ 2)

8). Substitute x by its value

9). Q.E.D.