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Can you help with this equation? Thanks. Solve for x and y and z for the following. x plus y plus z equals 9 x plus 2y plus 3z equals 23 x plus 5y plus -3z equals -7
Y+7=9 equals 2+7=9.
(3,21)
(4, 5)
5x+18 = 2x+9 5x-2x = 9-18 3x = -9 x = -3 and y = 3