Question

NO FILES I really need this one correct plz and thank you.

Answer 1

`x=20`°

Explanation:

→
`x+100+3x=180`

→
`4x+100=180`

→
`4x=180-100`

→
`4x=80`

→
`x=(80)/(4)=20`

`x=20`°

`---------`

hope it helps...

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