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Verified answer
Totak sudut A + B:= 180 - 35
= 145
(x + 15) + (3x + 10) = 145
x + 3x = 145 - 15 - 10
4x = 120
x = 30
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Verified answer
Mapel : MatematikaKelas : VII SMP
Bab : Sudut
Pembahasan :
Total Sudut segitiga = 180°
< A + < B + < C = 180°
(3x + 10)° + 35° + (x + 15)° = 180°
4x + 60 = 180
4x = 120
x = 30°