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

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

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

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

Multiply 13 by -1.

z=-13

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