5(z-3)=9z+21

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Solution for 5(z-3)=9z+21 equation:


Simplifying
5(z + -3) = 9z + 21

Reorder the terms:
5(-3 + z) = 9z + 21
(-3 * 5 + z * 5) = 9z + 21
(-15 + 5z) = 9z + 21

Reorder the terms:
-15 + 5z = 21 + 9z

Solving
-15 + 5z = 21 + 9z

Solving for variable 'z'.

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

Add '-9z' to each side of the equation.
-15 + 5z + -9z = 21 + 9z + -9z

Combine like terms: 5z + -9z = -4z
-15 + -4z = 21 + 9z + -9z

Combine like terms: 9z + -9z = 0
-15 + -4z = 21 + 0
-15 + -4z = 21

Add '15' to each side of the equation.
-15 + 15 + -4z = 21 + 15

Combine like terms: -15 + 15 = 0
0 + -4z = 21 + 15
-4z = 21 + 15

Combine like terms: 21 + 15 = 36
-4z = 36

Divide each side by '-4'.
z = -9

Simplifying
z = -9

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