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Sagot :
Solution:
Note that:
- Sum of interior angles = 180°
- (5x + 7) + (4x + 16) + (5x + 17) = 180
Simplify the equation to find x.
- (5x + 7) + (4x + 16) + (5x + 17) = 180
- => (14x + 40) = 180
- => 14x = 140
- => x = 10
Sum of angles=180
[tex]\\ \rm\bull\rightarrowtail 5x+7+4x+16+5x+17=180[/tex]
[tex]\\ \rm\bull\rightarrowtail 14x+40=180[/tex]
[tex]\\ \rm\bull\rightarrowtail 14x=140[/tex]
[tex]\\ \rm\bull\rightarrowtail x=10[/tex]
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