Equation which is correct
792 × 5 = 700 × 5 + 90 × 5 + 2 × 5
Step-by-step explanation:

Angle Z = Angle R = 35 degrees
Angle Y = 180-70-35 = 180-105 = 75
35 & 75 degrees
1st element can be matched with 5
2nd element can be matched with 4
3rd element can be matched with 3
etc.
Total number of correspondences = 5*4*3*2*1 = 120