We're given : x+y+z = 4x = -2yz = -3ySo, we replace x = -2y and z = -3y in the original equation.-> -2y + y + -3y = 4-> -4y = 4-> y = -1Now we have the value of y, we substitute it into x and zx = -2y = -2(-1) = 2z = -3(-1) = 3
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