2. Which equation is equivalent to the equation 7x – 10 = 2x - 5? You must show your work. *
7x - 5 = 2x
7x + 5 = 2x
7x - 10 = 2x
7x - 15 = 2x

7x -5 = 2x

Step-by-step explanation:

Here, we want to write an equation which is equivalent to what is given

The equation will be;

7x - 10 + 5 = 2x

So we have;

7x - 5 = 2x

ΔBDA should = 180°
∠D + 60 + 50 = 180
∠D + 110 = 180
∠D + 110 (-110) = 180 (-110)
∠D = 70
Due to vertical angles (theorem?), the ∠FDE is also 70°

to find ∠DFE, find ∠BDF
∠BDF = 180 - 70 (this 70 is from ∠D)
∠BDF = 110

∠BFD = 180 - 110 - 20
∠BFD = 50

∠D = 70

ΔFDE = x + 70 + ∠F

ΔAD'E = 180
∠D' = 70

∠DFC = 110
angle bisector states that it makes two equal angles
110/2 = 55
∠DFE= 55

180 - 70 - 55 =
180 - 125 = 
55
x = 55°

I'm hoping that this is right
& hope this helps