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In this video I explain how to solve the following problem of application of linear or first degree equations with one unknown: In a quadrilateral ABCD, the measure of angle A is 5X-8, the measure of angle B is 4X+4, the measure of angle C is 6X+14 and the measure of angle D is 7X-2. Find the value of X. Topic: #linearequations → • LINEAR EQUATIONS AND AP PROBLEMS... Become a member of this channel to enjoy benefits: / @julioprofe If you consider that my videos have been useful to you and you want to support me, you can do so at https://julioprofe.net/donaciones/ I invite you to follow me on social networks: ???? Facebook: / julioprofenet ???? Instagram: / julioprofenet ⚫ X: / julioprofenet I also invite you to visit my website https://julioprofe.net/ to check out all of my videos (organized by categories and topics) and the documents that I have produced, in the section https://julioprofe.net/documentos/ Have success in your academic activities! #julioprofe