Respostas

  • Usuário do Brainly
2014-06-01T16:34:24-03:00


18a/5+7b²+23,3c=

sendo a=6       b=1/2    c= -1

18.6/5 +7.(1/2)²+23,3.(-1)=

108/5 +7/4 - 23,3=

transformo  em número decimal

108/5=21,6              7/4= 1,75

21,5+1,75-23,3=

23,35-23,3=

0,05

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