z+78=2z-2

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Solution for z+78=2z-2 equation:


Simplifying
z + 78 = 2z + -2

Reorder the terms:
78 + z = 2z + -2

Reorder the terms:
78 + z = -2 + 2z

Solving
78 + z = -2 + 2z

Solving for variable 'z'.

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

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

Combine like terms: z + -2z = -1z
78 + -1z = -2 + 2z + -2z

Combine like terms: 2z + -2z = 0
78 + -1z = -2 + 0
78 + -1z = -2

Add '-78' to each side of the equation.
78 + -78 + -1z = -2 + -78

Combine like terms: 78 + -78 = 0
0 + -1z = -2 + -78
-1z = -2 + -78

Combine like terms: -2 + -78 = -80
-1z = -80

Divide each side by '-1'.
z = 80

Simplifying
z = 80

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