Question

calcule o sistema do primeiro grau X é igual a 16 Y menos x 6 x menos y é igual a 17 sobre 4

Answer 1

x = 16y - x2x = 16y
x = 16y/2
6x - y = 17/4
24x - 4y = 1724*(16y/2) - 4y = 17384y/2 - 4y = 17
(384y - 8y)/2 = 17376y/2 = 17376y = 17*2376y = 34y = 34/376y = 17/188
2x = 16y2x = 16*(17/188)2x = 272/188x = (272/188) / (2/1)x = 272/376x = 68/94x = 34/47

S ={34/47 ; 17/188}

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Prova real:
x = 16y - x
34/47 = 16*(17/188) - 34/47
34/47 = 272/188 - 34/47
34/47 = 34/47


6x - y = 17/4
6*(34/47) - 17/188 = 17/4

204/47 - 17/188 = 17/4

17/4 = 17/4.