7+2z-5=9z+12-5z

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Solution for 7+2z-5=9z+12-5z equation:


Simplifying
7 + 2z + -5 = 9z + 12 + -5z

Reorder the terms:
7 + -5 + 2z = 9z + 12 + -5z

Combine like terms: 7 + -5 = 2
2 + 2z = 9z + 12 + -5z

Reorder the terms:
2 + 2z = 12 + 9z + -5z

Combine like terms: 9z + -5z = 4z
2 + 2z = 12 + 4z

Solving
2 + 2z = 12 + 4z

Solving for variable 'z'.

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

Add '-4z' to each side of the equation.
2 + 2z + -4z = 12 + 4z + -4z

Combine like terms: 2z + -4z = -2z
2 + -2z = 12 + 4z + -4z

Combine like terms: 4z + -4z = 0
2 + -2z = 12 + 0
2 + -2z = 12

Add '-2' to each side of the equation.
2 + -2 + -2z = 12 + -2

Combine like terms: 2 + -2 = 0
0 + -2z = 12 + -2
-2z = 12 + -2

Combine like terms: 12 + -2 = 10
-2z = 10

Divide each side by '-2'.
z = -5

Simplifying
z = -5

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