10z-9=-5(z+6)+21

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Solution for 10z-9=-5(z+6)+21 equation:


Simplifying
10z + -9 = -5(z + 6) + 21

Reorder the terms:
-9 + 10z = -5(z + 6) + 21

Reorder the terms:
-9 + 10z = -5(6 + z) + 21
-9 + 10z = (6 * -5 + z * -5) + 21
-9 + 10z = (-30 + -5z) + 21

Reorder the terms:
-9 + 10z = -30 + 21 + -5z

Combine like terms: -30 + 21 = -9
-9 + 10z = -9 + -5z

Add '9' to each side of the equation.
-9 + 9 + 10z = -9 + 9 + -5z

Combine like terms: -9 + 9 = 0
0 + 10z = -9 + 9 + -5z
10z = -9 + 9 + -5z

Combine like terms: -9 + 9 = 0
10z = 0 + -5z
10z = -5z

Solving
10z = -5z

Solving for variable 'z'.

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

Add '5z' to each side of the equation.
10z + 5z = -5z + 5z

Combine like terms: 10z + 5z = 15z
15z = -5z + 5z

Combine like terms: -5z + 5z = 0
15z = 0

Divide each side by '15'.
z = 0

Simplifying
z = 0

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