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Adrielle10
@Adrielle10
April 2020
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Sejam A e B
dois ângulos suplementares e adjacentes. se A = 3x - 30º e B = x+ 10º, então A-B vale:
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Bowlt
Se eles são suplementares, A + B = 180.
3x - 30 + x + 10 = 180
4x = 180 + 30 - 10
4x = 180 + 20
4x = 200
x = 50
Se x é 50, substituiremos:
A = 3x - 30
3.50 - 30
150 - 30
120
B = x + 10
50 + 10
60
A - B
120 - 60
60
1 votes
Thanks 10
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Lista de comentários
3x - 30 + x + 10 = 180
4x = 180 + 30 - 10
4x = 180 + 20
4x = 200
x = 50
Se x é 50, substituiremos:
A = 3x - 30
3.50 - 30
150 - 30
120
B = x + 10
50 + 10
60
A - B
120 - 60
60