3(z-10)=-9

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Solution for 3(z-10)=-9 equation: 


Simplifying
3(z + -10) = -9

Reorder the terms:
3(-10 + z) = -9
(-10 * 3 + z * 3) = -9
(-30 + 3z) = -9

Solving
-30 + 3z = -9

Solving for variable 'z'.

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

Add '30' to each side of the equation.
-30 + 30 + 3z = -9 + 30

Combine like terms: -30 + 30 = 0
0 + 3z = -9 + 30
3z = -9 + 30

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

Divide each side by '3'.
z = 7

Simplifying
z = 7

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