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WITCHER [35]
3 years ago
13

Supplementary solving for x

Mathematics
2 answers:
Andrews [41]3 years ago
6 0

Answer:

7x-5=72( vertically opposite angle are equal)

7x=72-5

x=67/7

x=9.57

hope it helps.

sweet-ann [11.9K]3 years ago
6 0
7x-5=72
7x=72+5
7x=77
therefore, x=11

2nd part=
lets take a linear pair's property.
angle d+angle a= 180 degrees (linear pair property)
72 degrees+ angle a= 180 degrees
angle a= 180-72 degrees
therefore, angle a= 108 degrees.
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