To solve the linear equation of three variables: 1. X-5y-3z = - 4 3x + 5Y + Z = - 2 x-3y-5z = - 6
(1) (5) (2) 3x + 5Y + Z = - 2 (3) x-3y-5z = - 6 and (1) subtracting (4) (4) 2y-2z = - 2y-z = - 1 (5) 3x-15y-9z = - 12 (subtracting (2)) (2) 3x + 5Y + Z = - 220y + 10z = 10 (△ 10) 2Y + Z = 1 and Y-Z = - 1 add 3Y = 0y = 0z = 1x =
RELATED INFORMATIONS
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