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Sakina · Answer 1 · 2019-04-28T23:43:21+0000

Remember the definition of vertical angles.

The angle between 7x+7 and 112 are vertical. They are congruent and with the same measure.

7x +7= 112

Subtract 7 on both sides.

7x= 105

Divide both sides by 7.

x= 15

I hope this helps!
~kaikers

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