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Problema com Equações lineares.
Preciso de ajuda urgente pois a questão fecha hoje, tentei a resposta mais não tenho certeza. Não vou mencionar para não induzir se eu estiver errado.
Dadas as equações abaixo, a que representa uma equação linear é:
A) 4x+5y = -2zw
B) 2x-4y+3z2 = 0
C) x2+3y = 10
D) -3x+2y+z1/2 = w
E) ax+by+cz=dw (na qual, x, y, z e w são as incógnitas e a, b, c e d são os coeficientes).
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