9-5z=9-2(6z+7)

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Solution for 9-5z=9-2(6z+7) equation:


Simplifying
9 + -5z = 9 + -2(6z + 7)

Reorder the terms:
9 + -5z = 9 + -2(7 + 6z)
9 + -5z = 9 + (7 * -2 + 6z * -2)
9 + -5z = 9 + (-14 + -12z)

Combine like terms: 9 + -14 = -5
9 + -5z = -5 + -12z

Solving
9 + -5z = -5 + -12z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '12z' to each side of the equation.
9 + -5z + 12z = -5 + -12z + 12z

Combine like terms: -5z + 12z = 7z
9 + 7z = -5 + -12z + 12z

Combine like terms: -12z + 12z = 0
9 + 7z = -5 + 0
9 + 7z = -5

Add '-9' to each side of the equation.
9 + -9 + 7z = -5 + -9

Combine like terms: 9 + -9 = 0
0 + 7z = -5 + -9
7z = -5 + -9

Combine like terms: -5 + -9 = -14
7z = -14

Divide each side by '7'.
z = -2

Simplifying
z = -2

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