MathematicsMedium244×since 2002Q4582If for some α\alphaα and β\betaβ in R, the intersection of the following three places x + 4y – 2z = 1 x + 7y – 5z = b x + 5y + α\alphaαz = 5 is a line in R³, then α\alphaα + β\betaβ is equal to :A-10B0C10D2Check answerSkip