9=3(z-7)

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Solution for 9=3(z-7) equation:


Simplifying
9 = 3(z + -7)

Reorder the terms:
9 = 3(-7 + z)
9 = (-7 * 3 + z * 3)
9 = (-21 + 3z)

Solving
9 = -21 + 3z

Solving for variable 'z'.

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

Add '-3z' to each side of the equation.
9 + -3z = -21 + 3z + -3z

Combine like terms: 3z + -3z = 0
9 + -3z = -21 + 0
9 + -3z = -21

Add '-9' to each side of the equation.
9 + -9 + -3z = -21 + -9

Combine like terms: 9 + -9 = 0
0 + -3z = -21 + -9
-3z = -21 + -9

Combine like terms: -21 + -9 = -30
-3z = -30

Divide each side by '-3'.
z = 10

Simplifying
z = 10

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