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Question Number 195896 by AROUNAMoussa last updated on 12/Aug/23

Answered by HeferH last updated on 13/Aug/23

Commented by HeferH last updated on 13/Aug/23

180°−4x + 40°+2x = 180°   40° −2x = 0   20° = x

$$\mathrm{180}°−\mathrm{4}{x}\:+\:\mathrm{40}°+\mathrm{2}{x}\:=\:\mathrm{180}° \\ $$$$\:\mathrm{40}°\:−\mathrm{2}{x}\:=\:\mathrm{0} \\ $$$$\:\mathrm{20}°\:=\:{x}\: \\ $$

Answered by cherokeesay last updated on 13/Aug/23

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