Respostas

2014-07-28T19:29:50-03:00
X+y=100
2x+3y = 277

y = 100 - x

2x + 3*(100-x) = 277
2x + 300 - 3x = 277
-x = -23

x = 23

x + y = 100
23 + y = 100
y = 100 - 23

y = 77

77 Carros e 23 Motos
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2014-07-28T19:33:55-03:00
2x + 3*(100-x) = 277
2x + 300 - 3x = 277
-x = -23

x = 23

x + y = 100
23 + y = 100
y = 100 - 23

y = 77

o q equivale 77 Carros e 23 Motos
espero ter ajudado
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