Me ajudem eh urgente 2x+7y=17 5x-y=12
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2x+7y= 17
5x-y = 12
-y = 12-5x (.-1)
y = -12+5x
2x+7y=17
2x+7(-12+5x)= 17
2x-84+35x= 17
2x+35x = 17+84
37x = 101
x = 101/37
y = -12+5(101/37)
y = -12+505/37
y = -12.37 + 505/37
y = -444 + 505/37
y = 61/37
S = (101/37 , 61/37)
5x-y = 12
-y = 12-5x (.-1)
y = -12+5x
2x+7y=17
2x+7(-12+5x)= 17
2x-84+35x= 17
2x+35x = 17+84
37x = 101
x = 101/37
y = -12+5(101/37)
y = -12+505/37
y = -12.37 + 505/37
y = -444 + 505/37
y = 61/37
S = (101/37 , 61/37)
cintitamat:
bons estudos!
Obrigado!
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