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Mathematics 13 Online
OpenStudy (anonymous):

HELP PLEASE! Given three planes, find the solution using elementary operations. a) 2x - y + 2 = 1 b) x + y - z = -1 c) -3x - 3y + 3z = 3

OpenStudy (anonymous):

solve 1st eq. for y then plug it into 2nd eq.

OpenStudy (anonymous):

also plug it in the 3re eq,

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