9+7z+4-5z=

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Solution for 9+7z+4-5z= equation:


Simplifying
9 + 7z + 4 + -5z = 0

Reorder the terms:
9 + 4 + 7z + -5z = 0

Combine like terms: 9 + 4 = 13
13 + 7z + -5z = 0

Combine like terms: 7z + -5z = 2z
13 + 2z = 0

Solving
13 + 2z = 0

Solving for variable 'z'.

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

Add '-13' to each side of the equation.
13 + -13 + 2z = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 2z = 0 + -13
2z = 0 + -13

Combine like terms: 0 + -13 = -13
2z = -13

Divide each side by '2'.
z = -6.5

Simplifying
z = -6.5

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