Respostas

  • Usuário do Brainly
2013-02-06T15:27:39-02:00

a=2l+120

a+l=3000

 

2l+120+l=3000

3l=3000-120

3l=2880

l=2880/3

l=960

 

a=2l+120

a=2.960+120

a=1920+120

a=2040

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