-2z-9+4z=-30

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Solution for -2z-9+4z=-30 equation:


Simplifying
-2z + -9 + 4z = -30

Reorder the terms:
-9 + -2z + 4z = -30

Combine like terms: -2z + 4z = 2z
-9 + 2z = -30

Solving
-9 + 2z = -30

Solving for variable 'z'.

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

Add '9' to each side of the equation.
-9 + 9 + 2z = -30 + 9

Combine like terms: -9 + 9 = 0
0 + 2z = -30 + 9
2z = -30 + 9

Combine like terms: -30 + 9 = -21
2z = -21

Divide each side by '2'.
z = -10.5

Simplifying
z = -10.5

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