6z+7-4z=9+z-7

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Solution for 6z+7-4z=9+z-7 equation:


Simplifying
6z + 7 + -4z = 9 + z + -7

Reorder the terms:
7 + 6z + -4z = 9 + z + -7

Combine like terms: 6z + -4z = 2z
7 + 2z = 9 + z + -7

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

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

Solving
7 + 2z = 2 + z

Solving for variable 'z'.

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

Add '-1z' to each side of the equation.
7 + 2z + -1z = 2 + z + -1z

Combine like terms: 2z + -1z = 1z
7 + 1z = 2 + z + -1z

Combine like terms: z + -1z = 0
7 + 1z = 2 + 0
7 + 1z = 2

Add '-7' to each side of the equation.
7 + -7 + 1z = 2 + -7

Combine like terms: 7 + -7 = 0
0 + 1z = 2 + -7
1z = 2 + -7

Combine like terms: 2 + -7 = -5
1z = -5

Divide each side by '1'.
z = -5

Simplifying
z = -5

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