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Paul [167]
4 years ago
12

80°,(2x+10)°,and (3×-10)°

Mathematics
1 answer:
Licemer1 [7]4 years ago
8 0
2x+3x=5x
the +10-10 cancel each other out so it's just 80
5x+80=180
5x=180-80
5x=100
x=20
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