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KilluaZoldyck11
@KilluaZoldyck11
December 2019
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Qual é o valor de X quando o perimetro é 28cm
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leandrorabelofo
2x-6+3x-4+x+8=28cm
2x+3x+x=28-8+6+4
6x=30
x=30/6
x=5
14 votes
Thanks 25
AnnaRebeca1
Se o perímetro é a soma de todos os lados.Soma todos os lados que a questão dá e iguala a 28.
cálculo:
2x-6+3x-4+x+8= 28
2x+3x+x=28-8+6+4
6x=30
x= 30/6
x=5
2x-6 = 2.5-6 = 4
3x-4 = 3.5-4 = 11
x+8= 5+8=13
3 votes
Thanks 8
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Lista de comentários
2x+3x+x=28-8+6+4
6x=30
x=30/6
x=5
cálculo:
2x-6+3x-4+x+8= 28
2x+3x+x=28-8+6+4
6x=30
x= 30/6
x=5
2x-6 = 2.5-6 = 4
3x-4 = 3.5-4 = 11
x+8= 5+8=13