1 Answer

Pito · Answer 1 · 2021-12-19T02:04:52+0000

The two angles need to add to 180 degrees.

5a + 5. + 2a + 35 = 180

Combine like terms:

7a +40 = 180

Subtract 40 from both sides:

7a = 140

Divide both sides by 7:

a = 140 / 7

a = 20

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