2z+17=21
subtract 17 from both sides.
2z=4
divide both sides by 2
z=2
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60j + 2z = 6
I used the matrix method to find the answer: x=4, y=-7, z=-5.
4z + 3 = 6 + 2zSubtract 2z from each side of the equation:2z + 3 = 6Subtract 3 from each side:2z = 3Divide each side by 2:z = 3/2 = 1.5
13y+3z+8
-2z + 3