Sofiavaldivieso
Sofiavaldivieso
11-01-2022
Mathematics
contestada
Please help me do this
Respuesta :
tala646
tala646
11-01-2022
Sum of angles in a triangle is equal to 180
So you add the angle such that
13x+2+5x-7+3x-4=180
21x-9=180
21x=189
X=189/21
X=9
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