3z-5z=3z-7-9z

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Solution for 3z-5z=3z-7-9z equation:


Simplifying
3z + -5z = 3z + -7 + -9z

Combine like terms: 3z + -5z = -2z
-2z = 3z + -7 + -9z

Reorder the terms:
-2z = -7 + 3z + -9z

Combine like terms: 3z + -9z = -6z
-2z = -7 + -6z

Solving
-2z = -7 + -6z

Solving for variable 'z'.

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

Add '6z' to each side of the equation.
-2z + 6z = -7 + -6z + 6z

Combine like terms: -2z + 6z = 4z
4z = -7 + -6z + 6z

Combine like terms: -6z + 6z = 0
4z = -7 + 0
4z = -7

Divide each side by '4'.
z = -1.75

Simplifying
z = -1.75

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