Solve for z 7z-9=8z+4

Math
7z-9=8z+4
Move all terms containing z to the left side of the equation.
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Subtract 8z from both sides of the equation.
7z-9-8z=4
Subtract 8z from 7z.
-z-9=4
-z-9=4
Move all terms not containing z to the right side of the equation.
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Add 9 to both sides of the equation.
-z=4+9
Add 4 and 9.
-z=13
-z=13
Multiply each term in -z=13 by -1
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Multiply each term in -z=13 by -1.
(-z)⋅-1=13⋅-1
Multiply (-z)⋅-1.
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Multiply -1 by -1.
1z=13⋅-1
Multiply z by 1.
z=13⋅-1
z=13⋅-1
Multiply 13 by -1.
z=-13
z=-13
Solve for z 7z-9=8z+4

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