precalculus matrix

Question

Solve for u, x, y, and z in the given matrix equation.

	x	−9
2	y
+	−6	z
6	6
=	2	−9
2u	8

Answer 1

x - 6 = 2, so x = 8

-9 + z = -9, so z = 0

y + 6 = 8, so y = 2

2 + 6 = 2u. so u = 4